nonliving factor in an ecosystem 

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organisms that obtain its energy from abiotic sources

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variey of life within an area

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movement of a chemical through biological and geological or living and nonliving parts of an ecosystem

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total dry mass of all organisms in a given area

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regional or global community of organisms characterized by the climate conditions and plant communties that thrive there

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living things 

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organism that obtains its energy by eating only animals 

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process by which ATP is synthisized by using  chemicals as an energy source instead of light

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collection of all of the different populations that live in a given area 

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detritivore that breaks down organic matter into simpler compounds, returning nurtients back into an ecosystem

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organism that obtains its energy and nutrients by eating other organisms 

organism that eats dead matter

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study of the interactions among living things and their surroundings 

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collection of organisms and nonliving things 

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diagram that compares energy used by producers, primary consumers, and other trophic levels

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model that links organisms by their feeding relationships 

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model that shows the complex network of feeding realtionships within an ecosystem 

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species that does not rely on a single source of prey 

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organims that only eat plants 

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organism that obtains engery and nurtients by consuming other organisms 

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pathway of water from the atmosphere to earth's surface, below ground, and back

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organism that has an unusally large effect on its ecosystem 

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process by which certain types of bacteria convert gaseous nitrogen into nitrogen compounds

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organisms that eat animals and plants 

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organism that obtains engergy from abiotic sources 

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consumer thats eat a certain type of organism

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level of nourishment in a food chain 

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a natural fuel, formed in the geological past from the remains of living organims 

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