1. How is the greenhouse effect different from global warming?

2. Between 1.8 and 1.3 million years ago, what was the approximate number of years between glacial maxima? Which of Milankovich's cycles appears to be linked to these ice ages?

3. During the past 500,000 years, what was the approximate number of years between glacial maxima? Which of Milankovich's cycles appears to be linked to these ice ages?

4. What does ENSO refer to? Describe some of its effects.

5. What are two of the "fingerprints" of anthropogenic climate change?