State three reasons why the atmosphere is essential for life? 3 marks question
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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
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Answer:
atmosphere helps in maintaining earth temperature
filter UV radiation
protects earth
helps in weather changes
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