kayceecharleston kayceecharleston

03-02-2020
Biology

contestada

Airplanes reach cruising altitudes at the lower part of the Earth's stratosphere. This portion of the atmosphere is made up mostly of _ and _.

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s40090916 s40090916

11-02-2020

Answer:1.nitrogen

2.oxygen

Explanation:hope it helps!

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isabelladancer18 isabelladancer18

10-03-2020

Answer: nitrogen, oxygen

Explanation:

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