Answers

2015-12-12T16:16:13+05:30
Environment is very imp for humans survival. it gives us many things. earlies humans and environment used to have mutual benefits. like between gaseous exchange and all. but now the balance ha s changed humans just take from them and never return . they have become so selfish. they cut away all the trees , destroy all the greenery to build concrete jungles.  but now humans have started realizing their effects . its time to revive our environment. .
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