1. Honors Biology

2. I can evaluate the claims, evidence and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions may result in a new ecosystem.

3. Write down what you observe about the picture shown here. Compare your observations with a neighbor. With your neighbor, brainstorm 3 questions that you have about the picture that you wish to investigate.

4. Testable QuestionsObservable QuestionsResearchable Questions

7. Community Interactions Symbiosis ParasitismMutualismCommensalism Predation Herbivory Competition Competitive exclusion

8. Commensalism (+ / 0 ) One species benefits, other is neither harmed nor helped Ex: Cattle egrets and water buffalo Mutualism (+ / + ) Both species benefit Ex: sea anemone and hermit crab Parasitism (+ / - ) One species benefits, other is harmed Ex: heartworms in pets

9. Predator-Prey (+ / -) One species kills and eats another Ex: fox and rabbit Herbivory (+ / -) Prey is a plant Ex: beetle and leaf

10. Habitat Where an organism lives (“address”) Niche It’s role in its habitat (“profession”) Competitive exclusion If two species occupy the same niche, one will out compete and eliminate the other Two species can occupy the same habitat but not the same niche

11. Take out a piece of paper and number it 1-4 For each of the video clips you are about to see, identify the type of interaction between the organisms and state why it is that type of interaction Video 1 Video 2 Video 3 Video 4