2. Photosynthesis

3. Chlorophyll The cells in leaves contain chlorophyll Traps energy from the sun to produce energy- rich sugar molecules--carbohydrates 6CO 2 + 6H 2 O + solar energy = C 6 H 12 O 6 + 6O 2

4. Energy & Nutrient Transfer

5. Producer Organism that makes its own food Also called autorophs

6. Consumer Organism that get their energy by eating other organisms. Also called heterotrophs

8. Decomposers Organisms that feeds by breaking down organic matter from dead organisms Examples: bacteria and fungi

9. Exception to the Rule Deep-Ocean Ecosystems --Tube worms depend on bacteria that live inside them to survive. The bacteria uses energy from Hydrogen Sulfide to make their own food chemosynthesis

10. Chemosynthesis

11. Life Depends on the Sun Organisms use energy to move, grow and reproduce

12. Grizzly Bears Omnivore—eats both meat & plants Can eat up to 1.5% of their body weight in one day when eating salmon and 33% of body weight when eating fruits & vegetation. How many pounds of salmon can a 200lb grizzly bear eat in one day? 15% of 200 = 30lbs How many pounds of fruits and vegetation can the same bear eat in one day? 33% of 200 = 66 lbs

13. Cellular Respiration Breaking down of food to yield energy using the O 2 you breath in C 6 H 12 O 6 + 6O 2 = 6CO 2 + 6H 2 0 + energy

14. Excess Energy Stored as Fat or Sugar

15. Energy Transfer Food Chains, Food Webs, Trophic Levels

16. Food Chain Sequence in which energy is transferred from one organism to the next as each organism eats another organism

17. Food Web Feeding Relationships that are possible in an ecosystem

18. Who Eats Who-Energy Transfer

19. Food Chain – Food Web

20. Trophic Level Each step in the transfer of energy through a food chain or web in an ecosystem

21. Food Pyramid

22. Energy Loss Affects 1. decrease amount of energy impacts each trophic level 2. Loss limits the number of trophic levels; rarely have 4 or 5 levels since so much energy is needed to support

23. Trophic Cascade Indirect interaction between predators and the resources consumed by the predator’s prey

24. Cycling of Materials Materials in an ecosystem are constantly reused in an endless cycle

25. Nitrogen & Carbon Cycle

28. Nitrogen Cycle Movement of Nitrogen between atmosphere, bacteria and other organisms

30. Phosphorus Cycle Movement of phosphorus from the environment to organisms and back

32. Aquatic Ecosystem

33. How Ecosystems Change Primary Succession occurs on a surface where no ecosystem existed before Secondary Succession occurs where an ecosystem previously existed—pioneer species, climax community

34. Primary Succession

35. Ecological Succession

36. Old Field Succession