Question

What is the most abundant gas in the atmosphere?

Group of answer choices

Oxygen

Nitrogen

Carbon Dioxide

Water Vapor

Answer 1

Answer: Nitrogen

Explanation: Nitrogen makes up 78% of the atmosphere, Oxygen makes up 21%, and Argon 0.9%.

Water vaper makes up between 1-4%, depending on the region.

Carbon Dioxide makes up only about 0.04%.