If the amount of carbon dioxide in the atmosphere increases, which sphere is directly affected?

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Multiple Choice

If the amount of carbon dioxide in the atmosphere increases, which sphere is directly affected?

Explanation:
CO2 is a gas that resides in the air, so when its amount increases, the direct change happens in the atmosphere itself. The higher concentration of a greenhouse gas alters the composition of the air and strengthens the greenhouse effect, trapping more heat and warming the atmosphere. The other spheres catch the consequences of that warming through interactions with water, ice, and living systems, but the immediate, direct change is in the atmosphere.

CO2 is a gas that resides in the air, so when its amount increases, the direct change happens in the atmosphere itself. The higher concentration of a greenhouse gas alters the composition of the air and strengthens the greenhouse effect, trapping more heat and warming the atmosphere. The other spheres catch the consequences of that warming through interactions with water, ice, and living systems, but the immediate, direct change is in the atmosphere.

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