1. Ecology Energy Flow

2. *Food Chain A visual representation of various organisms in an ecosystem with arrows to show how energy is transferred (usually) by consuming another.

3. Food Web A visual representation of various energy systems in an ecosystem. http://videos.howstuffworks.com/discovery/2 7997-assignment-discovery-the-food-web- video.htm

4. Energy Pyramid A visual representation of various energy systems in an ecosystem showing how energy is transferred at each level. Energy is lost as you move up the pyramid. http://videos.howstuffworks.com/discovery/2 7995-assignment-discovery-energy-flow- video.htm

5. Producers/Autotrophs Organisms that use the sunlight to create (produce) it’s own energy. Also called an autotroph.

6. Consumers/Heterotrophs Organisms that have to consume (eat) other organisms to obtain energy. Also called a heterotroph.

7. Let’s Review http://videos.howstuffworks.com/discovery/2 9542-assignment-discovery-autotrophs-and- heterotrophs-video.htm

8. Herbivores Organisms that have to primarily eat grasses/plant material.

9. Carnivores Organisms that have to primarily eat meat/protein material.

10. Omnivore Organisms that eat both meat/protein and plant material.

11. *Let’s Review

12. Decomposers Organisms that break down wastes such as dead materials and recycle them in an environment. http://vimeo.com/13258487

13. Scavengers Organisms that tend to eat dead/decaying matter… garbage http://vimeo.com/37761995

14. Relationships between species I.Competition II.Predation III.Symbiosis

15. Limiting Factors Factors in the environment that can “limit” a population’s growth. Ex: weather, predation, lack of resources (water, food), habitat destruction, pollution…

16. I. Competition The struggle for organisms to survive as they compete for natural resources including habitat. http://www.arkive.org/turkey- vulture/cathartes-aura/video-08.html

17. II. *PredationPredation II. *PredationPredation One organism killing another for food. *Great example of perseverance, species relationships…and Mother’s Day all in one.

18. III. Symbiosis *Mutualism-*Mutualism- both species benefit (win/win) (+/+)

19. III. Symbiosis Commensalism- a relationship in which 1 species benefits and the other species is neither helped nor harmed. (+/0) http://vimeo.com/25512434

20. III. Symbiosis *Parasitism*Parasitism- a relationship in which 1 organism lives on or inside another harming it. (+/-)