CK-12 Foundation
Ck 12: Earth Science: Early Atmosphere and Oceans Study Guide
This comprehensive study guide covers the main terms and concepts needed for an earth science unit on the early atmosphere and oceans. Review questions are included at the bottom of the study guide.
Other
Moorland School: Earth Science Zone: The Origin of the Earth
A webpage reviewing the origin of the Earth. Learn what Earth was like during its first billion years with an atmosphere that contained no oxygen. Understand that oxygen levels built up once green plants became more abundant. At the end...