First Topic : Global temperatures vary from place to place. Describe the controls on temperature, including latitudinal influences, the differential heating and cooling of land and water, ocean current influences, and elevation. Include in your discussion any influences due to the tilt of the Earth on its axis.
Second Topic: Name and define the Greenhouse Gases. Include in your discussion: sources, both natural and human-induced sources, which gases are increasing and why, and possible environmental consequences relating to the increase in quantity of the gases in the atmosphere.
