HW4- exam ques.

HW4- exam ques. - 3. Why is ice considered a positive...

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Homework #3 Our Changing Environment 10/5/2009 Exam Questions 1. What are Anthropegenic Greenhouse Gases? Answer: a human induce greenhouse gas. Humans create it through things such as: Pollution of air and water, deforestation, etc. 2. How long ago did the ozone appear? Answer: About 2 billion years ago
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Unformatted text preview: 3. Why is ice considered a positive feedback? Answer: Because ice reflects the suns rays out of the atmosphere of our planet. 4. Name two things that a hurricane needs to survive? Answer: Condensation and warm water (vapor) 5. How fast does the earth rotate? Answer: .3 mi/s...
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