Question

How do trees purify the air for us?
2. What are the disadvantages of cutting down trees and
forests mindlessly?
3. For what different purposes were trees used by
man in ancient times ?
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Answer 1

Answer:

Ans. 1 Particles, odors and pollutant gases such as nitrogen oxides, ammonia and sulfur dioxide settle on the leaves of a tree. Trees absorb these toxic chemicals through their stomata, or 'pores', effectively filtering these chemicals from the air.

Ans. 2 The disadvantages to deforestation are an increased amount of carbon dioxide emissions and soil erosion as well as the destruction of forest habitat and the loss of biological diversity of both plants and animals.

Ans. 3 In ancient times, barks and big leaves of trees or animal skins and furs were used by people to cover themselves.