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CBSE Class 9 Answered

How is atmosphere on Earth different from the atmosphere on Venus and Mars? State two ways by which percentage of carbon dioxide is fixed on the earth.
Asked by Topperlearning User | 27 Apr, 2016, 07:52: AM
answered-by-expert Expert Answer

Earth has air which is a mixture of gases like nitrogen, oxygen, carbon dioxide and water vapour whereas the atmosphere found on Venus and Mars mainly consists of carbon dioxide.

Two ways by which percentage of CO2 is fixed on earth are :

(i) Green plants convert CO2 into glucose in the presence of sunlight.

(ii) Many marine animals use carbonates dissolved in sea water to make their shells.

Answered by | 27 Apr, 2016, 09:52: AM
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