1. Wake-up 1.Explain the difference between a primary consumer and a producer. 2.Which model, food chain or food web, is a better depiction of what happens in nature? Explain.

2. Two Laws that Allow Ecosystems to Function: #1 The Flow of Energy The Sun is the ULTIMATE source of energy for living things

3. Two Laws that Allow Ecosystems to Function: #2 The Cycling of Nutrients Nutrients = Water, Carbon, Nitrogen, Sulfur, Phosphorus

4. Basic Elements of Life Remember: CHNOPS C = Carbon H = Hydrogen N = Nitrogen O = OxygenP = Phosphorus S = Sulfur

5. Four Main Nutrient Cycles Water: H 2 O

6. Four Main Nutrient Cycles Carbon: C

7. Four Main Nutrient Cycles Nitrogen: N

8. Four Main Nutrient Cycles Phosphorus: P

9. How are nutrients (matter) cycled? Through living and non-living factors. Matter cannot be created or destroyed, but can be rearranged.

10. Why are nutrients cycled? If the earth doesn’t recycle these nutrient then they will run out

11. Hydrologic (Water) Cycle: What? Circulation of Earth’s water

12. Water cycle: Why? Water is a major part of every living thing. Water is LIFE

14. Water cycle: Components Transpiration: Plants release water Evaporation: Liquid to Vapor Precipitation: Rain, sleet, snow Runoff: Water moves across surface Infiltration: Absorb water Condensation: Vapor to liquid Watch Video

15. Water cycle: Problems Circulation of Earth’s water Watch Video

16. Carbon Cycle: What? Movement of carbon between organisms and their environment

17. Carbon Cycle: Why? Carbon makes up ALL living things; organic matter

19. Carbon Cycle: Summary Atmospheric CO 2 converted into carbohydrates by producers

20. Carbon Cycle: Summary Carbohydrates are consumed by organisms

21. Carbon Cycle: Summary Carbon is returned to the atmosphere through respiration, decomposition…..

22. Carbon Cycle: Summary And by burning fossil fuels Watch Video

23. Nitrogen Cycle: What? Circulation of nitrogen between organisms and the environment

24. Nitrogen Cycle: Why? Main part of nucleic acids (DNA, RNA, ATP) and proteins

26. Nitrogen Cycle: Components Tricky thing…. Nitrogen has to be “fixed” to be used by organisms

27. Nitrogen Cycle: Components Ways to fix… Lightning strikes

28. Nitrogen Cycle: Components Ways to fix… Bacteria

29. Nitrogen cycle: Diagram Fertilizer Nitrogen fixing Watch Video

30. Video explaining the Nitrogen cycle. It will have big words in it, but that just shows how detailed this process is. Watch Video