Directions: Answer the following questions. They are to be typed out in 12-pt. font.

They will be written in your own words, and you are to use proper grammar and spelling.I expect at least 6-8 sentences for each response.

Each one is worth 10points.

1. Do you have any friend or family member that you would consider an opinion leader on climate change issues? Describe how they might have shaped how you might think of climate, climate change, or the environment in general. Has this class so far either reinforced your view or changed your view completely?

2. Please explain in detail 5 pieces of evidence that shows that climate change exists. Give direct references either from the book ( page number ), the actual source [preferred ; e.g., NASA, NOAA, or Smith et al. 2008 ] , or the specific slide from the course. Be specific in your answers and give numerical values.

3. Please explain in detail how the greenhouse gas effect works, and what role do the greenhouse gases have? What is the difference between the natural greenhouse gas effect and global warming.

4. Describe 3 examples how humans perturb the Carbon Cycle describe how each affects the Energy Balance of Earth’s atmosphere.

5. How do climate scientists know that combustion of fossil fuels, in particular, is responsible for the increase in carbon dioxide instead of nonhuman sources such as volcanoes or plants?