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| a large area of the earth that has similar ecosystem and water |
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| the total area of the earth that contains and supports life |
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| the number of individuals in population in a same area |
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| when the birth rate is higher than the death rate |
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| a role or a job of an organism in a community |
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Definition
| get energy from a organism that have died |
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| different species of living things |
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| a field study is a scientific observation of free-living wild animals in which the subjects are observed in their natural habitat |
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Definition
| microscopic plant in water |
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Definition
| microscopic animals in the water |
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