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| the study of the interactions among living things, and between living things and their surroundings |
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| a group of different species that live together in one area |
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| all organisms as well as the climate, soil, water, rocks, and other non-living things |
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| a major regional or global community of organisms |
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| factors that are living things, such as plants, animals, fungi, and bacteria |
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| factors that are non-living things such as moisture, temperature, wind, sunlight, and soil |
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| the assortment, or variety, of living things in an ecosystem |
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| a species that has an unusually large ecosystem |
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| organisms that get their energy from non-living resources |
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| organisms that get their energy by eating other living or once-living resources |
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| the process by which an organism forms carbohydrates using chemicals, rather than light, as an energy source |
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| a sequence that links species by their feeding relationships |
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| organisms that eat only plants |
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| organisms that eat only animals |
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| organism that eat both plants and animals |
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| organism that eat detritus, or dead organic matter |
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| detrivores that break down organic matter into simpler compounds |
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| a consumer that primarily eats one specific organism or feeds on a very small number of organisms |
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| consumers that have a varying diet |
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| the levels of nurishment in a food chain |
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| a models that shows the complex network of feeding relationships and the flow of energy within and sometimes beyond the ecosystem |
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| a circular pathway of water on earth from the atmosphere, to the surface, below ground and back |
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| the movement of a particular chemical through the biological and geological, or living and non-living, parts of aneco-system |
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| process by which certain types of bacteria convert gaseous nitrogen compounds |
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| a measure of the total dry mass of organisms in a given area |
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| a diagram that compares energy used by producers, primary consumers, and other trophic levels |
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