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Write a note on how forests influence the quality of our air, soil and water resources.
Forests influence the quality of air, soil and water, natural resources in the following ways :
(i) Air - Forests have large number of trees, shrubs and herbs. They take in CO2 and give out oxygen during photosynthesis in daylight. Thus, they maintain the concentration of oxygen and carbon-dioxide in the atmosphere.
(ii) Soil - Forest tree and other plant roots bind the soil particles. They form a vegetation cover over the fertile top soil. Forest trees check the speed of running water and wind and thus protect the soil from erosion.
(iii) Water - Forest trees are large in number and give out enourmous amount of water during transpiration in the form of water vapour. The water vapour helps in the formation of clouds which on precipitation cause rain.
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What is biotic component?
Does there exist any relationship between the climate and biotic components? If yes, explain with example.
What percentage of oxygen and nitrogen is present in the air?
Name the pollutants by which industries pollute air.
How is balance of carbon dioxide and oxygen maintained in the environment?
What is the percentage of carbon dioxide in the atmosphere of Venus and Mars?
What are the two main ways in which oxygen is consumed and carbon dioxide is produced?
What are the two ways in which carbon dioxide is fixed to keep its percentage almost constant?
What is the role of the atmosphere in climate control?
What are the two factors that cause changes in our atmosphere?
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