1. List the different layers of the Earth's atmosphere. How are they defined?
2. In the Northern Hemisphere's summer the sun does not set at the North Pole. Although the Sun is the major source of heat for the Earth, why is the North Pole colder than the Tropics in the summer?
3. a. What role does humidity play in the global climate?
b. Using your answer from the question above, draw a system diagram to illustrate the relationship between Earth's temperature, humidity, and albedo.