what is the greenhouse effect?. agenda: 1.finish psq: greenhouse effect 2.notes 4-2: what shapes an...
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What is the greenhouse effect?
TUESDAY Journal Question
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8/28/12AGENDA: 1.Finish PSQ: Greenhouse Effect2.Notes 4-2: What shapes an
Ecosystem?3.Using Predators to Manage
Population
HW: 4.Science Investigation
Brainstorm (due Friday)5.Study for quiz on chapter 3
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4-2 What Shapes an Ecosystem?
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What are factors that affect the environment?
Biotic factors : the living factors.
Abiotic factors : physical, or nonliving, factors.
Pair Share: Identify biotic factors and abiotic factors in the classroom.
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IDENTIFY and Write Down 1)Abiotic Factors (3)2)Biotic Factors (3)3)Create one Food Chain
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What are factors that affect the environment?
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.
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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.
How do organisms interact?
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Community Interactions
Competition = when organisms attempt to use resources (water, nutrients, light, food, space) in the same place at the same time.
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Community Interactions
Predation = interaction in which one organism captures and feeds on another organism is called.
predator= the killer prey= the organism that gets eaten
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Community InteractionsAny relationship in which two species live closely together is called symbiosis.
Symbiotic relationships include: mutualismcommensalism parasitism
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Community Interactions
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. (+, -)
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Talk in your groups and come up with and write down examples for the 5 interactions:
1) Competition2) Predation3) Mutualism4) Commensalism5) Parastism
Group Time