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Question
Which among the following serves as green lungs?
Options:
A .  Forests
B .  Green house gases
C .  Kitchen gardens
D .  Agricultural lands
Answer: Option A
:
A
A forest is a large area dominated by trees and is known as the 'green lungs'. Since, they absorbcarbon dioxidefrom the atmosphere and releaseoxygen during the day time. Oxygen is required for animal respiration. Thus,in this manner they maintainthe balance of these gasesin the atmosphere.

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