Part -1:
1. The total carbon in the atmosphere currently is about 800 billion tons as carbon dioxide gas. Plants remove 100 billion tons in net primary production each year. How long would it take the atmosphere to run out of carbon dioxide if there were no means of replenishment of the gas?
2. On the time scale calculated in question 1, how is the carbon dioxide of the atmosphere replenished?
3. Where is most of the carbon in Earth's surface system stored?
6. What is the connection between organic matter and atmospheric oxygen?
7. Why is fossil fuel a nonrenewable resource?
13. How can volcanic eruptions like that of Mt. Pinatubo affect global climate?
Part 2:
1. How did the universe originate?
3. What are the major differences in environmental conditions between Hot Houses and Ice Houses with respect to temperature, atmospheric gas composition, sea level, seawater composition, carbonate precipitates, and glaciations?
4. Explain the difference between Hot/Ice Houses and glacial/interglacial periods.
10. Create an analogy comparing the length of time since the creation of Earth until today, putting into general perspective some events that have taken place since the planet formed.