The atmosphere consists mainly of __________.
A) nitrogen and argon
B) nitrogen and oxygen
C) oxygen and carbon dioxide
D) carbon dioxide and argon

Question

Quizplus · Accepted Answer

According to scientific studies, the Earth's atmosphere is composed mainly of nitrogen (about 78%) and oxygen (about 21%). Therefore, choice B (nitrogen and oxygen) is the best answer. Choices A (nitrogen and argon), C (oxygen and carbon dioxide), and D (carbon dioxide and argon) are not accurate because they do not reflect the dominant composition of the Earth's atmosphere.

The Atmosphere Consists Mainly of __________