By volume, which of the following comprises more than 1 percent of Earth's atmosphere?
A) carbon monoxide
B) chlorofluorocarbons
C) ozone
D) carbon dioxide
E) none of the above

Question

Quizplus · Accepted Answer

The primary components of Earth's atmosphere by volume are nitrogen (about 78%) and oxygen (about 21%), with argon making up about 0.93%. Carbon dioxide, while important for its greenhouse effect, comprises only about 0.04% of the atmosphere, and the other gases listed (carbon monoxide, chlorofluorocarbons, and ozone) are present in even smaller amounts.

By Volume, Which of the Following Comprises More Than 1