Discuss how our atmosphere is warmed up and how the Greenhouse effect raises the atmospheric temperature above the expected temperature if there were no atmosphere.
Due to increased human activity in the past century, much more CO2 is released by industries, cars, etc. Greenhouse gases like this(CO2) absorb heat from the sun, and prevent them from being reflected back to space. with lower amounts of Greenhouse gases less heat is trapped in the atmosphere, resulting in lower temperatures.
