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      Question

      When Pi is productivity per unit input of the limited

      or non-renewable resource, Si is alteration in soil properties, Wi is change in water resource and quality, Ci modification in climatic factor and t is the time, the index of sustainability (Is) can be computed as
      A Is = (Pi × Si × Wi × Ci) / t Correct Answer Incorrect Answer
      B Is = f((Pi × Si × Wi × Ci) / t) Correct Answer Incorrect Answer
      C Is = f(Pi + Si + Wi + Ci) × t Correct Answer Incorrect Answer
      D Is = [f(Pi + Si + Wi + Ci)] / t Correct Answer Incorrect Answer

      Solution

      Index of sustainability is computed as  Is = f((Pi × Si × Wi × Ci) / t)

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