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Motion
In what ways cycling of materials and flow of energy in the environment differ?
Cycling of materials and flow of energy in biosphere differ mainly in following ways :
(i) Flow of energy is unidirectional, i.e., from non-living to living things.
Unlike energy cycle the material cycle through living and non-living components of the biosphere.
(ii) Energy once trapped get lost as heat during its passage through trophic levels of food chain. Therefore, constant supply of energy from the sun is necessary.
The amount of various elements/minerals cycling through living and non-living components more or less remains constant.
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We know that many human activities lead to increasing levels of pollution of the air, water-bodies and soil. Do you think that isolating these activities to specific and limited areas would help in reducing pollution?
Write a note on how forests influence the quality of our air, soil and water resources.
What are the two things which are essential for all forms of life on the earth?
What is biosphere?
What are the physical components?
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?
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