Which statements about Earth’s atmosphere are correct? Check all that apply.The most abundant gas in the atmosphere is oxygen.Carbon dioxide in the atmosphere is important for plants.The troposphere shields Earth from chunks of rock from space.The stratosphere is located 50 to 80 kilometers from Earth’s surface.The troposphere gets colder the higher you go.The ozone in the stratosphere protects us from ultraviolet radiation.The amount of water vapor in the air is nearly constant.

Carbon dioxide is used by plants in photosynthesis, so it is important for plant growth. In the troposphere, temperature generally decreases as altitude increases. Ozone in the stratosphere absorbs much of the Sun’s harmful ultraviolet radiation. The other statements are incorrect: nitrogen is the atmosphere’s most abundant gas, the stratosphere is roughly 12–50 kilometers above Earth, and water vapor varies considerably in amount.

AI-written and checked against the verified answer.