Question

$\huge\underline{\underline{\mathbb{\red{Hello}}}}}}$ What are the cheif constituents of the atmosphere.
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Answer 1

Answer:

Below a height of about 86 kilometers, the three main gaseous elements, which together account for about 99.9% of the total atmosphere, exist in essentially constant proportion to the total: nitrogen comprises 78% of air by volume, oxygen comprises 21% of air by volume, and argon comprises another 0.9%.

Explanation:

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Answer 2

Answer:

answer is nitrogen, oxygen