CK-12 Foundation
Ck 12: Life Science: Origins of Life
[Free Registration/Login may be required to access all resource tools.] There is good evidence that life has probably existed on Earth for most of Earth's history. Fossils of blue-green algae found in Australia are the oldest fossils of...
CK-12 Foundation
Ck 12: Biology: Earth Forms and Life Begins Study Guide
This comprehensive study guide covers the main terms and concepts needed for a unit on the origin of life.
CK-12 Foundation
Ck 12: Biology: First Organic Molecules
[Free Registration/Login may be required to access all resource tools.] Examines how the first organic molecules were formed.