What are the three main types of fossil fuels? About what percent of the energy do these fossil fuel sources provide for Earth?

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Questions:

1.) At the opening of the documentary, what is the stated population of Earth? What does the narrator project the population to be in the near future?

2.) What are the three main types of fossil fuels? About what percent of the energy do these fossil fuel sources provide for Earth?

3.) In Brazil, why is indoor electricity essential for education?

4.) If everyone, globally, used energy at the same rate as those in North America, then by how much would the global energy consumption increase?

5.) How are fossil fuels made?

6.) How long did it take for most fossil fuel to form?

7.) Why was the U.S. Air Force interested in studying atmospheric CO2 in the 1950s?

8.) What information can be determined from glacial ice?

9.) About when did the last ice age start?

10.) How does the history of CO2 concentrations connect with average global temperatures?

11.) How many more times does human activity contribute CO2 than do natural sources?

12.) Why does the Pentagon (the U.S. military) care about climate change?

13.) Who is the single largest user of energy in the U.S.?