Q8 of 8 Page 132

Indiscriminate cutting of trees will lead to deforestation. How does it reduce rainfall on the one hand and lead to floods on the other hand?

Plants absorb water from their roots which gets evaporated from leaves. This evaporated water forms the clouds, and lead to rainfall. Cutting down of trees leads to disturbance in this process of cloud formation, causing reduced rainfall.

On the other hand, the trees also help prevent flooding. The tree roots dig deep into the soil and help prevent washing away of soil in the presence of excess water. Also, the tree roots continuously absorb water from the soil, making the soil drier and able to store more rainwater.


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4

People tried several methods to keep wild animals away from the fields and villages. Power fences were erected around the fields against animals.

Is it a healthy practice? Do you have any alternative that would help both animals and man?

 5

Planting trees is known as afforestation and cutting down trees is deforestation.

Is there any permanent solution to the problem of deforestation?

 6

Deforestation leads to many changes in the following but they are not in the right order. Arrange them in proper sequence.

a) Earth b) cities (urban area) c) environment d) wild animals e) villages f) rural areas g) the next generation

 7

What will happen if:

a. we go on cutting down trees?


b. the habitat of an animal is disturbed?


c. the top layer of the soil is exposed?