The earth's surface heats up from the sun. The atmosphere absorbs the heat and sends it back to earth, heating the earth even more. It can only do this because of greenhouse gases. Consult the text p.338-342 for help.
Homework: p.342 #1, 3-7; bring notes from previous units to work on your culminating assignment tomorrow
Homework: p.342 #1, 3-7; bring notes from previous units to work on your culminating assignment tomorrow