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after knowing the importance of oxygen and that it takes up 21% of the atmosphere,it is also the second abundant element in the atmosphere next to nitrogen what do you think will happen to us humans as well as the living organisms of percentage of oxygen in the atmosphere will decrease {environmental science}

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Answer:

Earth's atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases.

Explanation:

Carbon dioxide and oxygen are the gases in the atmosphere that are needed for life. Plants need carbon dioxide for photosynthesis. They use sunlight to change carbon dioxide and water into food. The process releases oxygen.

correct me if i'm wrong

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