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| Things that make their own food |
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| break down dead plants and animals for organic matters |
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| processes that comprise, and govern the behaviour of some defined subset of the biosphere. |
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| Contains all the ecosystems; the outermost part of the planet's shell |
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| major regional group of distinctive plant and animal communities |
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| A bunch of different populations that live in the same area |
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| Group of the same organism living in the same area |
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| a group of organisms so similar to one another that they can breed and produce fertile offsprings |
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| certain algae, plants and certain bacteria that can capture light/sun or chemicals and use that energy to produce food. |
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| best-known autorophs that harness solar energy |
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| when orgarnisms use chemical energy to produce carbohydrates |
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| organisms that rely on other organisms for their energy & food supply (also known as consumers) |
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| series of steps in which organisms transfer energy by eating or being eaten |
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| links all of the food chains in an ecosystem together |
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| each step in a food chain/web |
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| diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain/web |
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| the amount of living tissue within a given trophic level |
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| elements, chemical compounds and other forms of matter that are passed from organism to another; and from one part of the biosphere to another |
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| the process by which water changes from liquid to form into an atomosphere gas |
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| water that also enters the atmosphere by eveporating from the leaves of the plants |
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| all chemical substances that an organism needs to substain life |
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| other bacteria in the soil convert ammonria into nitrates and nitrites |
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| releases nitrogen into the atomosphere once again |
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| the rate at which organic matter is created by producers |
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| when an ecosystem is limited by a single nutrient that is scarce or cycles very slowly |
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| immediate increase in the amount of algae and other producers |
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