Documents Composition of the atmosphere; Contains layers based on altitude and pressure Nitrogen @ 78%, from.....

Composition of the atmosphere; Contains layers based on altitude and pressure Nitrogen @ 78%, from volcanic eruptions and when dead plants and animals decay. Oxygen @ 21%,…

Documents Announcements

Announcements 7 people have still not joined the class on Astronomy Place. Once you join, all your previous submissions appear in your grade. Planet Assignment 5, due Wed.…

Documents The Atmosphere. What is the Earth’s Atmosphere? Our atmosphere is the mixture of gases and...

The Atmosphere What is the Earthâs Atmosphere? Our atmosphere is the mixture of gases and particles that surround the Earth. The atmosphere is held around the Earth by gravity.…