1. What is the greenhouse effect?

2. AGENDA: 1.Finish PSQ: Greenhouse Effect 2.Notes 4-2: What shapes an Ecosystem? 3.Using Predators to Manage Population HW: 1.Science Investigation Brainstorm (due Friday) 2.Study for quiz on chapter 3

4. Biotic factors : the living factors. Abiotic factors : physical, or nonliving, factors. Pair Share: Identify biotic factors and abiotic factors in the classroom.

5. IDENTIFY and Write Down 1)Abiotic Factors (3) 2)Biotic Factors (3) 3)Create one Food Chain

6. The area where an organism lives is called its habitat. A niche is the full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions.

7. When organisms live together in ecological communities, they interact constantly. Community interactions, such as competition, predation, and various forms of symbiosis, can affect an ecosystem.

8. Competition = when organisms attempt to use resources (water, nutrients, light, food, space) in the same place at the same time.

9. Predation = interaction in which one organism captures and feeds on another organism is called. predator= the killer prey= the organism that gets eaten

10. Any relationship in which two species live closely together is called symbiosis. Symbiotic relationships include:  mutualism  commensalism  parasitism

11. Mutualism: both species benefit from the relationship. ( +, +) Commensalism: one member of the association benefits and the other is neither helped nor harmed. (+, 0) Parasitism: one organism lives on or inside another organism and harms it. (+, -)

12. Talk in your groups and come up with and write down examples for the 5 interactions: 1) Competition 2) Predation 3) Mutualism 4) Commensalism 5) Parastism