1. What is the degree range of the earth's tilt every 41,000 years? Durin what degree would you expect the earth to be warmest and during what degree would it be the coolest if it affects global climate?

2. Explain how the earth's orbit can change over a period of one eccentricity cycle? How would this affect global climate?

3. During what part of each decade (10 years) does the sun put out the most radiation? During what part of the decade does it put out the least?

4. Explain two ways that continental drift can effect climate change over long periods of time. If this is true, is it possible for us to find tropical species fossils in Utah? Explain.