Climate Changes Through Earth’s History
As continents shifted, the global climate varied as well. Geological data can also reveal that there were changes in temperature, ice cover, and carbon dioxide concentrations throughout the history of our planet.
Temperature: The Earth has had periods in the past that were really cold and other times that were really hot, but the oceans never completely froze, nor did they ever boil away.
Ice Cover: The amount of ice covering the planet has increased and decreased throughout history.
Carbon Dioxide: The concentration of carbon dioxide in Earth’s atmosphere has cycled between low levels and high levels.