Answers

2016-04-22T19:15:38+05:30
Give us oxygen to breathe.
Maintain ecological balance.
Helps in bringing rains.
Keeps check on pollution , floods , etc.
Bind the soil thereby preventing soil erosion..
Purify the air.
Gives us fresh fruits , vegetables , etc.
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2016-04-22T19:17:20+05:30
Trees provide shelter to many fauna
they are the reason for precipitation 
they avoid soil erosion
they maintain the temperatures
they purify the air
they provide wind to the clouds
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