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| Scientific study of interactions among organisms and between organisms and their enviroment. |
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| Part of earth in which life exists including land, water,and air or atmosphere. |
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| Group of similar organisims that can breed and produce fertile offspring. |
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| Assemblage of the different populations that live in a defined area. |
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| Collection of all the organisms that live in a particular place, togather with their non living enviroment. |
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| Group of ecosystem that have the same climate and dominate communites. |
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| Organism that can capture energy from sun light or chemicals and use it to produce it's own food from inorganic compounds: also called a producer. |
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| Process by which plants and some other organisms use light energy to convert water and carbon dixide into oxygen and high-energy carbohydrates such as surgars and starches. |
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| Process by which some organisms, such as certain bacteria, use chemical energy to produce carbohydrates. |
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| organism that relies on other organisms for it's energy and food supply;called a heterotropg. |
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| Organisms that obtains energy by eating animal.(meat) |
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| Orginisms that feed on plant and animal remains and other dead matter. |
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| Series of steps in an ecosystem in which oranisms tranfer energy by eating and being eaten. |
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| Step in a food chaon or food web. |
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| Diagram that shows the relative amounts of energy or matter within each trocpic level in a food chain or food web. |
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| Total amount of living tissue within a givin trophic level. |
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| Organism that can capture energy from sunlight or chemicals and use it to produce food from inorganic compounds;also called an autotroph. |
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| Organism that obtains energy from the foods it consums;also called a consumer. |
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| organisms that obtains energy by eating only plants. |
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| Oranism that obtains energy by eating both plants and animals. |
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| Organism that breaks down and obtains energy from the dead organic matter. |
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| Network of complex interactions formed by the feeding relationships among the varios organisms in the ecosystem. |
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| Process in which elements, chemical compounds,and other forms of matter are passed from one to another and and from one part of the biosphere to another. |
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| Process by which water changes from a liquid into an armososphere. |
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| Process in which part of the nucleotide sequence of DNA is copiedinto a complementary sequence. |
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| Chemical substance that an organism requires to live. |
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| Chemical substance that an organism requires to live. |
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| Chemical substance that an organism requires to live. |
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| Process of converting nitrogen gas into ammonia. |
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| Conversion of nitrates inti nitro gen gas. |
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| Rate at which oranic matter is created by producers in an ecosystem. |
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| Single nutrient that either is scarce or cycles very slowly , limiting the growth of organisms in an ecosystem. |
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