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Environmental Science: Unit 1 Test Study Guide

1. What gases make up the atmosphere?

2. What are the layers of the atmosphere from the ground to outer space?

3. Where is the ozone layer? Why is it important for life on Earth?

4. How does the atmosphere support life on Earth?

5. What are the stages of the water cycle? What phase is water during each stage?

6. How do humans contribute to the carbon cycle?

7. Describe photosynthesis and respiration. How is carbon involved?

8. What organisms can use atmospheric nitrogen?

9. How are nutrients returned to the environment from organisms?

10. Why are bacteria important in the nitrogen cycle?

11. What is the greenhouse effect?

12. What gas is most abundant in the atmosphere?

13. What evidence do we have for humans contributing to global warming?

14. What are the consequences of global warming?

15. How does deforestation impact climate change?