Ecology Basics

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Organism

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Any living thing. Ex: plants and animals.

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Population

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The number of organisms of the same species that live in an area.

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Community

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All of the living organisms (all populations) in an area.

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Oxygen

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A gas animals need to live; given off by plants.

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Food Chain

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A model that shows one path of energy in an environment.

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Food Web

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A model that shows all of the possible paths of energy flow within an environment; multiple food chains are represented.

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Producer

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An organism that makes its own food using the sun's light. EX: plants.

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Consumer

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An organism that must eat to live. EX: animals.

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Decomposer

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An organism that breaks down or rots other organisms. EX: fungus, bacteria, some insects (F.B.I.).

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Herbivore

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An organism that only eats plants, these animals have round, broad, fat teeth; will always be considered prey.