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

Index of sustainability is computed as Is fPi Si Wi Ci t

A Is = (Pi × Si × Wi × Ci) / t

B Is = f((Pi × Si × Wi × Ci) / t)

C Is = f(Pi + Si + Wi + Ci) × t

D Is = [f(Pi + Si + Wi + Ci)] / t

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