State any four pressing environmental concerns of India. Correction for environmental damages involves opportunity costs. Explain

State any four pressing environmental concerns of India. Correction for environmental damages involves opportunity costs. Explain.
Or
List some of the priority environmental issues of India today ?

Four pressing environmental concerns of India are:
(i) Land degradation and solid waste management,
(ii) Biodiversity loss,
(iii) Air pollution with special reference to vehicular pollution in urban cities,
(iv) Management of fresh water.
Correction for environmental damages involves opportunity costs as the industrial development in past has polluted and dried up rivers and other aquifers making water an economic good.