1. Do Now: Write your answer…. Would the Calvin Cycle be able to exist without light? Explain. **Take out your homework**

2. The Carbon Cycle Process by which Carbon moves from inorganic to organic compounds and back.

3. Carbon sinks – places where carbon can be stored for extended periods (ie- long-lived trees)

4. The Carbon Cycle Carbon sources- places where carbon is likely to be released into the atmosphere (ie- respiration).

5. CO 2 in the atmosphere C0 2 is necessary for photosynthesis

6. CO 2 in the atmosphere Traps heat from the sun – the greenhouse effect – to keep the temperature on earth warm enough for living things.

7. CO 2 in the atmosphere CO 2 levels in the past century have been rising. –Went from 300 parts per million to 360 parts per million.

8. DIRECTIONS: Read the information and answer the questions. “Effects of Increasing Carbon Dioxide Levels” What is the effect of increased CO 2 levels on plant growth rates? What do caterpillars need to consume for growth? How do increased CO 2 levels affect the plant’s composition of carbohydrates and proteins? What potential problems could this cause for consumers? How does consuming plants growing in increased CO 2 levels affect a caterpiller’s susceptibility to prey? What is a problem bean farmers are encountering that stems from increases CO 2 levels?