Answers

2015-02-12T20:34:40+05:30
Status of Plants 50 years ago = There are all over many green trees . There are many trees as compared to present.

Status of Water-bodies 50 years ago = Water bodies are very clean , fresh and many water organisms like fish , sharks etc exist in these water bodies. People used to devote these water-bodies ( Ganga , Yamuna )

Status of air pollution = And if there are more and more trees then there is no pollution in the environment.

Status of  
Plants,animals,water bodies and air pollution after 50 years.

If the government take the action against the woodcutters and grow more and more trees the danger of global warming get reduced and there is a better conditions for plants , animals , water bodies in about 50 years later.
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