Question

planting of trees help in checking global warming.how?

Answer 1

planting trees helps in increase in oxygen and reduction in Co2 hence helps in checking global warming

Answer 2

global warming is due to increase in level of co2. if we plant more trees,they will take in co2 from the environment to carry out photosynthesis and produce o2. hence plant will reduce level of co2 in environment reducing global warming.