The History of Life on Earth As We Know It. The History of Earth Earth is ~ 4.5 billion years old Earth’s history is divided into four eons –Hadean Eon:
Igneous Rocks. States that in a series of rock layers, the layers toward the bottom had to be laid first and were therefore older than layers higher up.
Landscapes and NY State
Major Points: Landscape characteristics are the result of the interaction of forces of crustal movement, people, and climate Underlying bedrock.
