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an organism that breaks down wastes and the remains of other organisms |
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any organism that eats the food producers make or eats other consumers |
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any evidence of an organism that lived in the past |
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a developing organism that results from fertilization |
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a material that helps support life on Earth...soil, water, sunlight, air, coal, oil and wood. |
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said of an organism no longer alive on Earth |
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change in living things over time |
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the living part of an ecosystem |
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the living and non-living things in an environment and all their interactions |
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one type of organism living in an area |
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the set of steps in which organisms get the food they need to survive |
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a depletion of resources that occurs when too many of at least one kind of living thing inhabits an ecosystem |
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the adding of harmful substances to the water, air, or land |
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harmful moisture that falls to Earth after being mixed with wastes from burned fossil fuels |
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a long period of time with little or no precipitation |
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an organism, such as a plant, that makes food |
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the pattern that shows how food chains are related |
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the study of how living and non-living things interact |
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