Cambrian
Geologic time (Earth Science)
The fossil record and molecular studies concur that the diversification that produced most animal phyla occurred rapidly on the vast scale of geologic.
CLIMATE CHANGE
Evolution of Earth’s climatic system: Evidence from ice ages, isotopes, and impacts
CLIMATE CHANGE THE GREAT DEBATE Session 2. EARTH HISTORY 4567 Ma to 2.5 Ma No rocks are left that date back to the beginning of the Earth. Oldest known.
