The Earth's atmosphere is composed mostly of ________________
A)water and oxygen
B)nitrogen and carbon dioxide
C)water and carbon dioxide
D)nitrogen and oxygen
E)oxygen and carbon dioxide

Question

Quizplus · Accepted Answer

The Earth's atmosphere is composed mostly of nitrogen (78%) and oxygen (21%). Other gases that make up the remaining 1% include argon, carbon dioxide, neon, helium, and hydrogen. Water vapor can vary in concentration, but typically makes up less than 1% of the atmosphere.

The Earth's Atmosphere Is Composed Mostly of ________________