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| the natural environment where an organism lives |
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| a group of individuals of the same species that live together |
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| all the different populations of organisms that live in the same place |
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| a green pigment that absorbs light energy for photosynthesis |
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| the production of more offspring by those individuals in a population that are genetically best adapted to the environment |
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| a change in the genetic makeup of a population, usually resulting when natural selection favors some individual characteristics over others |
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| raw materials other than carbon dioxide and water that are needed by primary producers for primary production |
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| molluscs whose shells consist of eight overlapping plates on either upper, or dorsal, surface |
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| photosynthetic organisms that live on the surface of algae or plants |
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| gastropods, or close relatives of snails, that lack a shell and have exposed gills |
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| the increase in steepness that marks the outer edge of the contintental shelf |
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| organisms that can use energy (usually solar energy) to make organic matter |
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| organisms that cannot make their own food and must eat the organis matter produced by autotrophs |
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| the conversino of carbon dioxide into organic matter by autotrophs, that is, the production of food |
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| CO(2) + H(2)O + sun energy --> organic matter +O(2) |
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| organic matter + O(2) --> CO(2) + H(2)O + energy |
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Definition
| different atomic forms of an element |
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| made of the skeletons and shells of marine organisms |
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| conversion of nitrogen gas into nitrogen compounds that can be used by primary producers as nutrients |
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| the complex set of chemical reactions that occur inside cells |
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| the physical or chemical breakdown of rocks |
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