Health, 15.01.2021 20:00 byler47

PLEASE HELP ITS FOR STUDY ISLAND I WILL GIVE BRAINLIEST Airplanes reach cruising altitudes at the lower part of the Earth's stratosphere. This portion of the atmosphere is made up mostly of

and

options for first blank: nitrogen

water vapor

helium

options for second blank:ozone

carbon dioxide

oxygen

carbon monoxide

Answers: 3

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PLEASE HELP ITS FOR STUDY ISLAND I WILL GIVE BRAINLIEST Airplanes reach cruising altitudes at the l...