1. Climate Change and Humans pg.433 - 471
Are Climates Changing?
What evidence suggests our climate may be changing more rapidly than some species can adapt?

2. How much of global warming is owing to natural greenhouse effects and enhanced greenhouse effects?

3. What are the main greenhouse gases that contribute to warming temperatures?
Carbon dioxide
nitrous oxide
halocarbons

4. Where does the CO2 come from?

5. What removes carbon dioxide from the atmosphere (carbon sinks)?

6. What are the main sources of the carbon dioxide in the atmosphere?

7. Can human activities cause climate change? (12.2)
Albedo effects
 reflection  temperatures
 reflection (absorption)  temperatures

8. Predicting Climate Change 12.3
GCMs (General Circulation Models): 3-D mathematical models made with supercomputers: What do they tell us?

9. What will happen to Canadian biomes if CO2 emissions double?

10. The Challenge: How can we reduce our impact on the biosphere and global climate and still meet human needs?
IPCC
International Panel on Climate Change
Kyoto Protocol
Precautionary Principle
Gaia Hypothesis

11. Assignment:
Complete your notes