| Term | Definition |
|---|
| ecology | the study of the interactions of living organisms with one another and with the environment |
| biotic | the living organisms in an ecosystem |
| abiotic | any nonliving component of an environment |
| population | a group of organisms of the same species populating a given area |
| food chain | the pathway of energy tranfered 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 |
| decomposer | organisms that get energy by breaking down dead organisms |
| prey | an organism that is killed and eaten by another organism |
| commensalisms | a relationship between two organisms in which one organism benefits and the other is unaffected |
| host | an organism that is harmed |
| symbiosis | a relationship in which two different organisms live in close association with each other |
| limiting factors | a resource that is so scarce, that it limits the size of a population |
| community | all the populations of species that live in the same habitit and interact with each other |
| ecosystem | a community of organisms and their abiotic environment |
| biosphere | the part of earth where life exists |
| herbivore | an organism that eats only plants |
| carnivore | an organism that eats animals |
| omnivore | an organisms that eats both plants and animals |
| scavenger | omnivores that eats dead plants or animals |
| predator | an organism that eats all or part of another organism |
| mutualism | a relationship in between 2 species in which both species benefit |
| parasitism | a relationship between 2 species the parasite, benefits from rrom the other species, the host which is harmed |
| parasite | an organism that harms another one |
| carrying capacity | the largest population that an environment can support at any given time |
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