Ch 10 Prentice-Hall
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28 terms
Terms | Definitions |
|---|---|
 organism | A living thing |
| habitat | the place where an organism lives |
| biotic factor | a living part of an ecosystem |
| abiotic factor | a nonliving part of an ecosystem |
| photosynthesis | process by which plants use the sun's energy to convert water and carbon dioxide into sugars |
| species | a group of organisms so similar to one another that they can breed and produce fertile offspring |
| population | all the members of one species in a particular area |
| community | all the different populations that live together in an area |
| ecosystem | a community of organisms and their nonliving environment |
| ecology | The study of how living things interact with each other and their environment |
| limiting factor | an environmental factor that causes a population to decrease |
| carrying capacity | the largest population that an area can support |
| producer | an organism that makes its own food |
| consumer | an organism that obtains energy by feeding on other organisms |
| herbivore | a consumer that eats only plants |
| carnivore | a consumer that eats only animals |
| omnivore | a consumer that eats both plants and animals |
| scavenger | a carnivore that feeds on the bodies of dead organisms |
| decomposer | An organism that breaks down wastes and dead organisms |
| food chain | a series of events in which one organism eats another and obtains energy |
| food web | The pattern of overlapping food chains in an ecosystem |
| energy pyramid | diagram that shows the amount of energy from one feeding level to another in a food web |
| adaptations | A trait or behavior that helps a living thing survive in its environment |
| niche | the role of an organism in its habitat, or how it makes its living |
| competition | the struggle between organisms to survive as they attempt to use the same limited resource |
| predation | an interaction in which one organism kills another for food |
| predator | The organism that does the killing in a predation interaction |
| prey | an organism that is killed and eaten by another organism |
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