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        <link:definition>995495 - Disclosure - Property and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/PropertyAndEquipmentDetailsNarrative" id="PropertyAndEquipmentDetailsNarrative">
        <link:definition>995496 - Disclosure - Property and Equipment (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/AcquiredProjectPipelineDetails" id="AcquiredProjectPipelineDetails">
        <link:definition>995497 - Disclosure - Acquired Project Pipeline (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/AcquiredProjectPipelineDetailsNarrative" id="AcquiredProjectPipelineDetailsNarrative">
        <link:definition>995498 - Disclosure - Acquired Project Pipeline (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/ContractFulfillmentAssetsDetails" id="ContractFulfillmentAssetsDetails">
        <link:definition>995499 - Disclosure - Contract Fulfillment Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/OtherAssetsMaintenanceAgreementAndConsiderationPayableToACustomerDetails" id="OtherAssetsMaintenanceAgreementAndConsiderationPayableToACustomerDetails">
        <link:definition>995500 - Disclosure - Other Assets, Maintenance Agreement and Consideration Payable to a Customer (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/OtherAssetsMaintenanceAgreementAndConsiderationPayableToACustomerDetailNarrative" id="OtherAssetsMaintenanceAgreementAndConsiderationPayableToACustomerDetailNarrative">
        <link:definition>995501 - Disclosure - Other Assets, Maintenance Agreement and Consideration Payable to a Customer (Detail Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/LoanReceivableDetailNarrative" id="LoanReceivableDetailNarrative">
        <link:definition>995502 - Disclosure - Loan Receivable (Detail Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/DeferredRevenueDetails" id="DeferredRevenueDetails">
        <link:definition>995503 - Disclosure - Deferred Revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/DeferredRevenueDetailsNarrative" id="DeferredRevenueDetailsNarrative">
        <link:definition>995504 - Disclosure - Deferred Revenue (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/OtherCurrentLiabilitiesDetails" id="OtherCurrentLiabilitiesDetails">
        <link:definition>995505 - Disclosure - Other Current Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/OtherCurrentLiabilitiesDetailsNarrative" id="OtherCurrentLiabilitiesDetailsNarrative">
        <link:definition>995506 - Disclosure - Other Current Liabilities (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/ConvertibleNotesDetails" id="ConvertibleNotesDetails">
        <link:definition>995507 - Disclosure - Convertible Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/ConvertibleNotesDetailsNarrative" id="ConvertibleNotesDetailsNarrative">
        <link:definition>995508 - Disclosure - Convertible Notes (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/LongTermDebtDetails" id="LongTermDebtDetails">
        <link:definition>995509 - Disclosure - Long-Term Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/LongTermDebtDetailsNarrative" id="LongTermDebtDetailsNarrative">
        <link:definition>995510 - Disclosure - Long-Term Debt (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/ReceivablesFinancingObligationsAndTermLoanDetails" id="ReceivablesFinancingObligationsAndTermLoanDetails">
        <link:definition>995511 - Disclosure - Receivables Financing Obligations and Term Loan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/ReceivablesFinancingObligationsAndTermLoanDetailsNarrative" id="ReceivablesFinancingObligationsAndTermLoanDetailsNarrative">
        <link:definition>995512 - Disclosure - Receivables Financing Obligations and Term Loan (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/ShareholdersEquityDetailNarrative" id="ShareholdersEquityDetailNarrative">
        <link:definition>995513 - Disclosure - Shareholders Equity (Detail Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/WarrantsDetails" id="WarrantsDetails">
        <link:definition>995514 - Disclosure - Warrants (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/WarrantsDetailsNarrative" id="WarrantsDetailsNarrative">
        <link:definition>995515 - Disclosure - Warrants (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/InvestmentsAndSecuritiesReceivableDetails" id="InvestmentsAndSecuritiesReceivableDetails">
        <link:definition>995516 - Disclosure - Investments and Securities Receivable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/InvestmentsAndSecuritiesReceivableDetailsNarrative" id="InvestmentsAndSecuritiesReceivableDetailsNarrative">
        <link:definition>995517 - Disclosure - Investments and Securities Receivable (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/InternallyDevelopedSoftwareDetailsNarrative" id="InternallyDevelopedSoftwareDetailsNarrative">
        <link:definition>995518 - Disclosure - Internally Developed Software (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/StockOptionPlanDetails" id="StockOptionPlanDetails">
        <link:definition>995519 - Disclosure - Stock Option Plan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/StockOptionPlanDetailNarrative" id="StockOptionPlanDetailNarrative">
        <link:definition>995520 - Disclosure - Stock Option Plan (Detail Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/IncomeTaxesDetailNarrative" id="IncomeTaxesDetailNarrative">
        <link:definition>995521 - Disclosure - Income Taxes (Detail Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/LossPerShareDetails" id="LossPerShareDetails">
        <link:definition>995522 - Disclosure - Loss Per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/LossPerShareDetailsNarrative" id="LossPerShareDetailsNarrative">
        <link:definition>995523 - Disclosure - Loss Per Share (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/RelatedPartyTransactionsDetailsNarrative" id="RelatedPartyTransactionsDetailsNarrative">
        <link:definition>995524 - Disclosure - Related Party Transactions (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/ConcentrationsDetailsNarrative" id="ConcentrationsDetailsNarrative">
        <link:definition>995525 - Disclosure - Concentrations (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/CommitmentsAndContingenciesDetails" id="CommitmentsAndContingenciesDetails">
        <link:definition>995526 - Disclosure - Commitments and Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/CommitmentsAndContingenciesDetailsNarrative" id="CommitmentsAndContingenciesDetailsNarrative">
        <link:definition>995527 - Disclosure - Commitments and Contingencies (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://karx.com/role/SubsequentEventsDetailsNarrative" id="SubsequentEventsDetailsNarrative">
        <link:definition>995528 - Disclosure - Subsequent Events (Details Narrative)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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      <link:linkbaseRef xlink:type="simple" xlink:href="karx-20260831_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
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  <element id="karx_ScheduleOfContractFulfillmentAssetsTableTextBlock" name="ScheduleOfContractFulfillmentAssetsTableTextBlock" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_ScheduleOfLongTermDebtTableTextBlock" name="ScheduleOfLongTermDebtTableTextBlock" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" />
  <element id="karx_ScheduleOfWarrantsTableTextBlock" name="ScheduleOfWarrantsTableTextBlock" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" />
  <element id="karx_DerivativeLiabilitiesWarrants" name="DerivativeLiabilitiesWarrants" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_FairValueMeasurementRecognizedOnIssuanceOfConvertibleNotes" name="FairValueMeasurementRecognizedOnIssuanceOfConvertibleNotes" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_FairValueMeasurementReleasedToEquityOnConversion" name="FairValueMeasurementReleasedToEquityOnConversion" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_ReclassificationOfWarrantsFromEquityAmount" name="ReclassificationOfWarrantsFromEquityAmount" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_DuesAndSubscriptionsAmount" name="DuesAndSubscriptionsAmount" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_BankAndTransactionFees" name="BankAndTransactionFees" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_WarrantsAndOptionsDescription" name="WarrantsAndOptionsDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_MaintenanceAgreementDescription" name="MaintenanceAgreementDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_DerivativeLiabilitiesMeasuredAtFairValueGain" name="DerivativeLiabilitiesMeasuredAtFairValueGain" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_DerivativeLiabilityAtFairValueOtherChangesInFairValue" name="DerivativeLiabilityAtFairValueOtherChangesInFairValue" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_DerivativeLiabilitiesDerivativesIssued" name="DerivativeLiabilitiesDerivativesIssued" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_WarrantsIssued" name="WarrantsIssued" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_ChangeInAccountingEstimateAndIncreasedDerivativeLiability" name="ChangeInAccountingEstimateAndIncreasedDerivativeLiability" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_PrepaidSponsorshipAndMarketingCurrent" name="PrepaidSponsorshipAndMarketingCurrent" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_PrepaidBiocharEquipmentDepositCurrent" name="PrepaidBiocharEquipmentDepositCurrent" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_CarbonCreditInventoryAmount" name="CarbonCreditInventoryAmount" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_ProjectPipelineGross" name="ProjectPipelineGross" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_AccumulatedAmortizationOfPipelineCost" name="AccumulatedAmortizationOfPipelineCost" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_AmortizationExpenseProjectPipeline" name="AmortizationExpenseProjectPipeline" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_FiniteLivedIntangibleAssetsAmortizationExpensesNextTwelveMonths" name="FiniteLivedIntangibleAssetsAmortizationExpensesNextTwelveMonths" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_MaintenanceAgreementRelatedToConsiderationPayableToACustomer" name="MaintenanceAgreementRelatedToConsiderationPayableToACustomer" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_InterestIncome" name="InterestIncome" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_ConvertibleNotesReceivableIncludingAccruedInterest" name="ConvertibleNotesReceivableIncludingAccruedInterest" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_AdvancedToRelatedParty" name="AdvancedToRelatedParty" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_NumberOfSharesPledgedAsCollateral" name="NumberOfSharesPledgedAsCollateral" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
  <element id="karx_IncreaseInAllowancesForCreditLosses" name="IncreaseInAllowancesForCreditLosses" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_IncreasesOfOtherOwnershipInterestsValue" name="IncreasesOfOtherOwnershipInterestsValue" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_OtherCustomerPrepayments" name="OtherCustomerPrepayments" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_NumberOfCertificatesForWhichPaymentReceived" name="NumberOfCertificatesForWhichPaymentReceived" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
  <element id="karx_ProceedsFromCustomersInDeferredRevenue" name="ProceedsFromCustomersInDeferredRevenue" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_DevelopmentCostsPrepaymentsReceived" name="DevelopmentCostsPrepaymentsReceived" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_OtherAccruedLiabilitiesCurrentAndNoncurrentDuringPeriod" name="OtherAccruedLiabilitiesCurrentAndNoncurrentDuringPeriod" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_AggregatePurchasePrices" name="AggregatePurchasePrices" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_BeneficialOwnershipLimitationsRate" name="BeneficialOwnershipLimitationsRate" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
  <element id="karx_UnamortizedDebtDiscountAndIssuanceCosts" name="UnamortizedDebtDiscountAndIssuanceCosts" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_InterestPaidDuringQuarter" name="InterestPaidDuringQuarter" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_AmountWithheldAtClosing" name="AmountWithheldAtClosing" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_FinancingObligationsOfMerchantDescription" name="FinancingObligationsOfMerchantDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_NumberOfSharesIssuedForSettlementOfFindersFeeShares" name="NumberOfSharesIssuedForSettlementOfFindersFeeShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_IssuanceOfSharesUponConversionOfNotesPayableAndAccruedInterestAmount" name="IssuanceOfSharesUponConversionOfNotesPayableAndAccruedInterestAmount" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_WeightedAverageExercisePriceOptionsExercisable" name="WeightedAverageExercisePriceOptionsExercisable" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDate" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDate" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_ShareBasedCompensationOnSharesIssuedForServices" name="ShareBasedCompensationOnSharesIssuedForServices" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_RelatedPartyTransactionsDescription" name="RelatedPartyTransactionsDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_ConcentrationRiskPercentage" name="ConcentrationRiskPercentage" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
  <element id="karx_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" name="LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_LeaseAndRentalExpenses" name="LeaseAndRentalExpenses" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_OperatingLeasesDescription" name="OperatingLeasesDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_TradeFinancingDescription" name="TradeFinancingDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_CarbonCreditPurchaseAgreementDescription" name="CarbonCreditPurchaseAgreementDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_WarrantToPurchaseShares" name="WarrantToPurchaseShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
  <element id="karx_OrganizationalCostExpenseBC" name="OrganizationalCostExpenseBC" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_RepayableWeeklyRemittancesAmount" name="RepayableWeeklyRemittancesAmount" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_CashFeeInstalmentsAmount" name="CashFeeInstalmentsAmount" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_MarketingServicesAgreementShares" name="MarketingServicesAgreementShares" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
  <element id="karx_CommonStockIssuedAndOutstanding" name="CommonStockIssuedAndOutstanding" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
  <element id="karx_CashProceedsAfterCosts" name="CashProceedsAfterCosts" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_ConvertiblePromissoryNotesPrincipalAmount" name="ConvertiblePromissoryNotesPrincipalAmount" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_LegalServices" name="LegalServices" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
  <element id="karx_CommitmentSharesInConnectionWithConvertibleNote" name="CommitmentSharesInConnectionWithConvertibleNote" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
  <element id="karx_DiscountToMarketPrice" name="DiscountToMarketPrice" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
  <element id="karx_PropertyAndEquipmentAbstract" name="PropertyAndEquipmentAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_AcquiredProjectPipelineAbstract" name="AcquiredProjectPipelineAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_ContractFulfillmentAssetsAbstract" name="ContractFulfillmentAssetsAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_OtherAssetsMaintenanceAgreementAndConsiderationPayableToACustomerAbstract" name="OtherAssetsMaintenanceAgreementAndConsiderationPayableToACustomerAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
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  <element id="karx_OtherCurrentLiabilitiesAbstract" name="OtherCurrentLiabilitiesAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_ConvertibleDebtAbstract" name="ConvertibleDebtAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_ReceivablesFinancingObligationsAbstract" name="ReceivablesFinancingObligationsAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_ShareholdersEquityAbstract" name="ShareholdersEquityAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_WarrantsAbstract" name="WarrantsAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_InternallyDevelopedSoftwareAbstract" name="InternallyDevelopedSoftwareAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_StockOptionPlanAbstract" name="StockOptionPlanAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_IncomeTaxesAbstract" name="IncomeTaxesAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
  <element id="karx_ContractAssetMaintenanceAgreementAbstract" name="ContractAssetMaintenanceAgreementAbstract" nillable="true" abstract="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
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  <element name="FiveNotesMember" id="karx_FiveNotesMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="OtherLendersMember" id="karx_OtherLendersMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="MrClovisMember" id="karx_MrClovisMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="KarbonXTradingMember" id="karx_KarbonXTradingMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="ConversionsOfConvertibleNotesMember" id="karx_ConversionsOfConvertibleNotesMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="TopMember" id="karx_TopMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="ConvertibleNotesMember" id="karx_ConvertibleNotesMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="OneLenderMember" id="karx_OneLenderMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="TheLenderMember" id="karx_TheLenderMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="MaintenanceNoteMember" id="karx_MaintenanceNoteMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="BottomMember" id="karx_BottomMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="MaintenanceAgreementMember" id="karx_MaintenanceAgreementMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="LenderMember" id="karx_LenderMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="ProviderAMember" id="karx_ProviderAMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="ProviderBMember" id="karx_ProviderBMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="MasterNoteTranche1January82026Member" id="karx_MasterNoteTranche1January82026Member" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="MasterNoteTranche2February182026Member" id="karx_MasterNoteTranche2February182026Member" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="KarbonXCorpMember" id="karx_KarbonXCorpMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="ConvertiblePromissoryNotesFiveMember" id="karx_ConvertiblePromissoryNotesFiveMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="EmployeesDirectorsOfficersAndConsultantsStockOptionPlanMember" id="karx_EmployeesDirectorsOfficersAndConsultantsStockOptionPlanMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="DebtfundLPMember" id="karx_DebtfundLPMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="LoanAgreementMember" id="karx_LoanAgreementMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="ABCMangroveSenegaMember" id="karx_ABCMangroveSenegaMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="IRECSalesAgreementMember" id="karx_IRECSalesAgreementMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="ConvertiblenotesConvertedMember" id="karx_ConvertiblenotesConvertedMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="ReceivablesFinancingMember" id="karx_ReceivablesFinancingMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="ConversionsAndShareIssuancesMember" id="karx_ConversionsAndShareIssuancesMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="ConsultingAgreementsMember" id="karx_ConsultingAgreementsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="CFICapitalMember" id="karx_CFICapitalMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="GWCapitalMember" id="karx_GWCapitalMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="AuctusFundMember" id="karx_AuctusFundMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="SilverCrestHybridCapitalMember" id="karx_SilverCrestHybridCapitalMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="FiveConvertibleNotesPayableMember" id="karx_FiveConvertibleNotesPayableMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="FiveLendersMember" id="karx_FiveLendersMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="StockBasedCompensationExpenseMember" id="karx_StockBasedCompensationExpenseMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="TermLoanPayableMember" id="karx_TermLoanPayableMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="ProviderCMember" id="karx_ProviderCMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="ProviderDMember" id="karx_ProviderDMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="AssetsPledgedAsCollateralMember" id="karx_AssetsPledgedAsCollateralMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="OptionsMember" id="karx_OptionsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
  <element name="WarrantsMember" id="karx_WarrantsMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
</schema>
