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| a group of various species that live in the same place and interact with on another |
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| the group along the nonliving and living environment |
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| is the place where an organism lives |
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| the variety of organisms in a given area |
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| the replacement of one community by another at a single place over a period of time |
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| is the average weather conditions in an area over along period of time |
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| is a large region characterized by a specific kind of climate and certain kinds of plant and animal communities |
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| the basic food source for an photosynthetic organism |
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| are organisms that eat other organisms instead of producing their own food |
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| such as bacteria and fungi are organisms that break down the remains of animals |
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| the steps in the transfer of energy through an ecosystem |
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| a triangular diagram that passes through the ecosystems food chain |
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| is the continuous movement of carbon from the environment into living things and back |
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| is the process in which nitrogen calculates among the air, soil, water, and organisms in an ecosystem |
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| is the movement of phosphorus in different chemical forms from the surroundings to organisms and then back to the surroundings |
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| continuous water flow between the atmosphere,the land, and the oceans |
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