The needs of sustainable development arc as follows :
(i) Limiting the human population to a level within the carrying capacity of the environment.
(ii) Technological progress should be input efficient and not input consuming.
(iii) Renewable resources should be extracted on a sustainable basis, i.e., rate of extraction should not exceed rate of regeneration.
(iv) For non-renewable resources, rate of depletion should not exceed the rate of creation of renewable substitutes.
(v) Inefficiencies arising from pollution should be corrected.