Answers

2015-10-18T13:31:36+05:30
Trees are the source of food on earth. they sythesis their own food through the process photosynthesis and produce oxygen and inhale carbon dioxide which helps to maintain the balance of o2 and co2. the roots of the trees hold the soil firmly which prevents soil  erosion. in their absence there will also be a great effect on the water cycle as trees give out water through the process of transpiration. trees also helps in moderating climate. 
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