How did Atmosphere Form
Origins of the Atmosphere. About 4.5 billion years ago, Earth formed out of nebula of gases and dust that were to become the solar system Small objects--called.
Studying for Exam II, etc. Same type of exam as first one Chapters covered: Sec. 0.4, Ch.1, Ch. 4, not Ch. 5 Note: also Triangulation and Measurement covered,
