About 2 pages typed, double spaced, size 12 font. You DO NOT need to site sources but DO NOT cut and paste ANYTHING from ANYWHERE! Most of the knowledge is in your notes/minds from class discussions, but you can research more. Answer these questions in your essay: •What do scientists think is causing the increased greenhouse effect on Earth? How do scientists know that climate change is occurring? •What do scientists think will be the effects of climate change? What can you do reduce your "carbon footprint"? •What roles and responsibilities do engineers/scientists have for preventing the increased greenhouse effect?