Question

class 9 state three reason why the atmosphere is essential for life
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Answer 1

Explanation:

Atmosphere is very important for sustaining life: It contains various gases like O2, CO2, N2 which are required for various life processes by plants and animals. (ii) gas is used by plants to prepare food by the process called photosynthesis (iii) Oxygen is required for burning, combustion and respiration.

Answer 2

Answer:

The atmosphere is essential for life for the following reasons:

(a) Oxygen which is essential for the survival of all living organisms is present in the atmosphere.

(b) Essential gases that support life on the earth are present in the atmosphere.

(c) Water cycle would not have been possible without the atmosphere.

(d) The atmosphere acts as a protective blanket for the earth by blocking the harmful UV rays from the sun.

(e) The temperature on the earth is maintained because of the presence of the atmosphere.