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| A group of various species that live in the same place and interact with one another |
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| the group, along with the living and nonliving environment. |
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| the place where organisms 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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| photosythetic organisms, such as plants and algae, change light energy from the sun into energy they can use to grow |
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| organisms that eat other organisms instead of producing their own food |
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| oraganisms such as bacteria and fungi, break down the remains of animals |
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| Each ctep in the transfer of energy though an ecosytem |
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| A triangular diagram that shows an ecosystem's loss of energy |
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| the continuous movement of carbon from the nonliving environment into living things and back |
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| the process of exchanging oxygen and Co2 between organisms and their surroundings |
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| the process in which nitrogen circulates among the air, soil,water and organisms in an ecosystem |
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| the movement of phosphorus in different chemical forms from the surroundings to organisms and then back ot the surroundings |
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