The layers of Earth's atmosphere may differ from one another greatly in terms of temperature, but each layer contains the same mixture of gases. Examine the pie chart below.

When greenhouse gases build up in the atmosphere, they change its composition. Examine the pie chart below that shows which gases are greenhouse gases:

Use both graphs to choose the response below that best compares and contrasts the components of the atmosphere and greenhouse gases.

A.
Earth's atmosphere and greenhouse gases both contain oxygen. The atmosphere contains a moderate amount of oxygen, while greenhouse gases only contain a small amount of oxygen.


B.
Earth's atmosphere and greenhouse gases both contain nitrogen. Nitrogen makes up the largest percent of the atmosphere, while greenhouse gases contain only a small amount of nitrogen.


C.
Earth's atmosphere and greenhouse gases both contain carbon dioxide. Carbon dioxide makes up the largest percent of greenhouse gases, while the atmosphere naturally contains only a small amount of carbon dioxide.


D.
Earth's atmosphere and greenhouse gases both contain small amounts of a mixture of gases, noted as "other gases" on both graphs. Greenhouse gases contain a larger percentage of this mixture than the atmosphere does.