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MA 6.3 A food web identifies producers, consumers, and decomposers, and explains the transfer of energy through trophic levels. Relationships among organisms.

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Presentation on theme: "MA 6.3 A food web identifies producers, consumers, and decomposers, and explains the transfer of energy through trophic levels. Relationships among organisms."— Presentation transcript:

1 MA 6.3 A food web identifies producers, consumers, and decomposers, and explains the transfer of energy through trophic levels. Relationships among organisms add to the complexity of biological communities. SECTION 13.2 BIOTIC AND ABIOTIC FACTORS

2 *two page notebook format* Do Now: 1) Think about a vegetable garden. What factors influence the success of a garden? 2) Word study: Find words to help you understand what biotic and abiotic might mean 3) Academic vocabulary: Diversity – what does it mean? What is Biodiversity? Genetic Diversity? Tuesday, Oct 28, 2014 Topic: Ecology Objectives: Identify biotic and abiotic factors in an ecosystem. Describe how a change in one factor in an ecosystem can affect others Explain how a keystone species impacts diversity Practice using population/ecology vocabulary. Page 25Page 26

3 Factors in the success of a garden….

4 Biotic and abiotic….

5 Diversity… biodiversity… genetic diversity…

6 Biotic and abiotic (page 378) Define biotic and abiotic Go back to factors for a successful garden. Sort – which are biotic and which are abiotic?

7 Biodiversity and keystone species (pg 379-80) WHY is the beaver considered a keystone species? Could the Pacific salmon be considered a keystone species? Why? Could humans be considered a keystone species? Why?

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