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| the seientifc study of interactions amon organisms and between organisms and their enviroment or surroundings |
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| comibined portions of the planet in which all of life exists including land water and air or atmosphere |
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| a group of organisms so similar to one another that they can breed and produce fertile offspring |
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| a collection of all the organisms that live in a particular place together |
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| a group of ecosytems that have the same climate and similar dominate comunities |
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| only plants some algae and certain bacteria that captures energy to produce food |
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| organism that vapture energy from sunlight or chemicals and use it to produce food from inorganic compunds: SAME THING AS AUTOTROPH |
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| process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high energy carbohydrates such as sugars |
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| process which some organisms such as bateria use chemical energy to produce carbohydrates |
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| organism that obtains energy from the foods it consumes akso caled consumer |
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| organism that breaks down abd obtains energy from dead organic matter |
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an organism that breaks down and obtains energy from dead organic matter |
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| organisms that feeds in plant and animal remains and ither dead matter |
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a step in a food chain or web |
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| a diagram that shows the relative amounts of energy or mater contained with in each trophic level in food chain or web |
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| the total amount of living tissue within a given trophic level |
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| elements chemical compunds and other forms of matter are passed form one prganism to the other and forrm one part of the biosphere to another |
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| the process by which water changes froi=n liquid form to an atmospher gas |
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| water entering the atmosphere by evaporating from the leaves of plants |
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| all the chemical substances that an organism needs to sustain life |
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| bacteria which live in the sooil and on the roots of plants called legumes convert nitrogen gas into ammonia |
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| other soil bacteria conver nitrates into nitrogen gas |
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| groups of indiv. that belong to the same speices and live in the same area |
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| assemblage of different populations that live together in defined area |
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