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| Portion of earth that supports life |
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| group pc ecosystems with the sae climate and similar community |
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| group pf interacting populations |
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| individual organisms of a single species that share the same geographic location |
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| organisms that eat other organisms |
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| break down part of dead matter |
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| relashanship between organisms |
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| both organisms benefit fro eacother |
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| one benefits the otehr unaffected |
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| one organism benefits at the expense of another |
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| large grasses area and lots of fires and drought |
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| low less than 30cm/yr rain |
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| estblishment of a community; soil is created |
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| change that takes place to a community; soil preexistant |
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| when algae jacks all the oxygen and fishies die |
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| loss of water through stomata |
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| when ice turns straight to water vapor |
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| when water vapor freezes straight to ice |
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| liquid goes straight to water vapor |
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| water vapor goes to water |
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| -nitrogen of dead animals is released as ammonium (NH4+) |
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| is when soil bacteria converts ammonium into nitrates (NO2-) then made into nitrates (NO3-) |
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| nitrates change back into nitrogen gas |
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| drought, flood, extreme temps, tornadoes, hurricanes, mand made factors |
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| biotic factors(mostly, not all); predation diseas parasites competition |
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| keeps soil from washing away |
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| slows the runoff of water |
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