enviromental science ch.1
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22 terms
Terms | Definitions |
|---|---|
 ecology | the study of interactions of living organisms with one another and with their enviroment |
| biotic | describes living factors in the enviroment |
| abiotic | describes the nonliving part of the enviroment,including water,rocks,light,and temperature |
| population | a group of organisms of the same species that live in a specific geographical area |
| community | all the populations of species that live in the same habitat and interact with eachother |
| ecosystem | a community of organisms and their abiotic enviroment |
| biosphere | the part of Earth where life exists |
| herbivore | an organism that eats only plants |
| carnivore | an organism that eats only animals |
| omnivore | an organism that eats both plants and animals |
| food chain | the pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms |
| food web | a diagram that shows the feeding relationships between organisms in an ecosystem |
| energy pyramid | a triangular diagram that shows an ecosystem's loss of energy,which results as energy passes through the ecosystem's food chain |
| limiting factors | a resource that is so scarce that it limits the size of a population is called a limiting factor |
| carrying capacity | the largest population that an enviroment can support at any given time |
| prey | an organism that is killed and eaten by another organism |
| predator | an organism that eats all or part of another organism |
| symbiosis | a relationship in which two different organisms live in close association with each other |
| mutualism | a relationship between two species in which both species benefit |
| commensalism | a relationship between two organisms in which one organism benefits and the other is unaffected |
| parasitism | a relationship between two species in which one species,the parasite,benefits from the other species,the host,which is harmed |
| coevolution | the evolution of two species that is due to mutual influence,often in a way that makes the relationship more benficial to both species |
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