Write a brief essay on importance of gases present in atmosphere.
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The atmosphere consists of many gases and they are indispensable for life on Earth
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The atmosphere is a thin blanket surrounding the earth and consists of air which includes gases and tiny particles. Without air, there won't be any life on Earth.
The air is a mixture of many gases, the most important among them are oxygen, nitrogen, hydrogen and carbon dioxide.
All animals inhale oxygen and exhale carbon dioxide. Plants require carbon dioxide for photosynthesis. Nitrogen makes up nearly 78% of atmospheric gas.
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