Download - ECOLOGY. Ecology is: The study of the relationship between living organisms and their environment
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ECOLOGY
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Ecology is:
The study of the relationship between living organisms and their environment.
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In other words—Ecology is the study of Ecosystems.
• An ecosystem is an interacting system of
Living (biotic) organisms and their non-living
(abiotic)
environment.
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An ecosystem is made up of two sets of factors:
• A) biotic factors—the living portion of the
ecosystem. Living organisms such as
plants, animals, fungi, and the list goes
on.
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Ecological Organization
The organization of ecological factors is as follows:
1.Individual
2.Population
3.Community
4.Ecosystem
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• Individual- one organism
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• Populations: Group of organisms of the same species living in an area.
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• Communities—all of the living organisms
in an ecosystem.
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B) Abiotic factors—the non-living portion of the ecosystem. This includes the following:
• Water
• Soil
• Temperature
• Sunlight
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In order for an ecosystem to exist it must meet 3 criteria to be
SELF-SUSTAINING:
• HAVE AN ENERGY SOURCE (SUN)
• ENERGY MUST BE CONVERTED OR STORED FOR USE BY ORGANISMS
• NUTRIENTS MUST BE RECYCLED
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YOU DECIDE—ENVIRONMENT OR
ECOSYSTEM?
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ENVIRONMENT OR ECOSYSTEM?
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Ecosystems and Energy Flow Relationships
Food Chains, Food Webs, And Energy Pyramids!!!!
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Food Chain
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Food Web
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Energy Pyramid