LOOK AT THIS TIME SCALE. TELL ME 5 THINGS ABOUT WHAT YOU SEE. TELL ME ONE THING YOU ALREADY KNOW AND ONE THING YOU WANT TO KNOW.
Fossils and Geologic Time. Early History of Earth Hot interior and surface Volcanoes released gases Water vapor Carbon dioxide Nitrogen Mot much oxygen.
Fossils and Geologic Time
THE GEOLOGIC TIME SCALE: THE HISTORY OF EARTH
