In these three chapters one of the main points regularly discussed was climate; particularly cold climate and how it changes over time. In these chapters he discussed Louis Agassiz, who created the ice age theory, James Croll, who reasoned the ice age due to orbit and position of Earth, and Milutin Milankovitch, who used Croll’s idea and confirmed Agassiz’s. He also explained how because of Earth’s distance from the Sun and it’s angle Earth’s climate and ice ages correlated with a pattern of 100,000, 40,000, and 19,000 years. This information on the change in temperature was then used to define how certain living things spread across the globe throughout time, such as specific species being able to move to
In these three chapters one of the main points regularly discussed was climate; particularly cold climate and how it changes over time. In these chapters he discussed Louis Agassiz, who created the ice age theory, James Croll, who reasoned the ice age due to orbit and position of Earth, and Milutin Milankovitch, who used Croll’s idea and confirmed Agassiz’s. He also explained how because of Earth’s distance from the Sun and it’s angle Earth’s climate and ice ages correlated with a pattern of 100,000, 40,000, and 19,000 years. This information on the change in temperature was then used to define how certain living things spread across the globe throughout time, such as specific species being able to move to