1. CALLIE DAVIS Unit 3 Review

12. Where does carbon come from?

13. Can we recycle…. Matter? Energy? Both?

14. Photosynthesis Explain

15. 1 st Law of Thermodynamics Energy Input Energy Output

16. Types of Energy Chemical Nuclear Mechanical Electrical Thermal

17. Nitrogen Cycle Whose the most important?

18. Why is phosphorus a limiting factor?

19. Locations where precipitation can end up.

20. Why are primary consumers on the second trophic level?

21. Why is sulfur so important to plants & animals?

22. What organisms form the base of the energy pyramid?

23. Why can’t plants & animals use the nitrogen gas in the atmosphere?

24. Why does it take more energy to keep a bear alive than a rabbit?

25. Carbon Cycle Review the Carbon Cycle Activity we did in class. (I handed the papers back on Thurs. in class) Focus on the questions, especially #1 & #2 How Carbon travels