Question

What will happen if the composition of air changes

Answer 1

Answer:

The remaining water would freeze. Eventually (long after surface life had died), solar radiation would break atmospheric water into oxygen, which would react with carbon on the Earth to form carbon dioxide. The air would still be too thin to breathe. The lack of atmosphere would chill the Earth's surface.

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Answer 2

An increase in the CO2 concentration in the atmosphere will increase the global temperature only slightly, but that change is enough to increase the amount of water vapor in the air, through evaporation from the oceans.

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