Which gas was a component of Earth's early atmosphere?
A) Argon
B) Neon
C) Water vapor
D) Oxygen
E) Freon

Question

Quizplus · Accepted Answer

Scientists believe that Earth's early atmosphere was primarily composed of water vapor, carbon dioxide, methane, ammonia, and nitrogen. Over time, volcanic activity and the evolution of organisms led to the development of oxygen and the reduction of other gases. Argon and neon were present in small amounts, but Freon did not exist naturally in Earth's early atmosphere.

Which Gas Was a Component of Earth's Early Atmosphere