Question

the ecosystem get affected when plants are removed how and why ?

Answer 1

The ecosystem get affected when plants are removed  because
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1)plants will purify the environment
2)they help in the process of rainfall
3)it helps in maintaining the groundwater level and also saves the fertility of soil 
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if there are no plants in the ecosystem it will dead to
1)severe droughts , there will be decrease in rainfall
2)it will also lead to the global warming 
3)pollution will keep increasing and many animals , may die etc