Research Papers / Greenhouse Effect Outline Help/Review (Senior Research Paper) [4]

We are doing our "Senior Research Paper" and the topic was up to us, so I chose Greenhouse Effect because I would like to learn more about the Greenhouse Effect, global warming, etc. The paper itself has to be 15 pages in length, but right now I'm just trying to work on an outline. All I have so far is:

The Greenhouse Effect
A. Greenhouse Gas Introduction
1. Earth's energy balance
2. Car Window Effect
3. Elements in the Greenhouse Gas
B. Increases in Greenhouse Gas
1. Industrial Revolution
2. Global Warming's Assistance.

Any Help and or suggestions would be greatly appreciated!

Thanks, falcons.