Question

In certain parts of india forest have been cleared water bodies and air have been polluted , how we save it

Answer 1

what does 'it' refers to here

Answer 2

Not just in some parts, but in many parts of India are experiencing extreme afforestation and pollution in water and air. Most part of the India have been selected as the worst polluted cities in the world. Since you asked, how we can save them?, I say, stop accepting every governmental programs as it as and start asking questions to the government. Because most of the trees have been cut downed in the name of developmental programs.

We don’t need a developmental program by destroying our ecosystem.

We don’t need industrial development near water sources.  

So I can just suggest. Just go ask questions to the government.