| Term | Definition |
|---|
| organism | living thing |
| habitat | the place where an organism lives and provides the things the organism needs |
| biotic factors | the living parts of an ecosystem |
| abiotic factors | the nonliving parts of an ecosystem |
| photosynthesis | the process in which organisms use water along with sunlight and carbon dioxide to make food |
| species | a group of organisms that are physically similar and can reproduce with each other to 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 |
| ecology | the study of how living things interact with each other and their environment |
| population density | the number of individuals in a specific area |
| immigration | moving into a population |
| emigration | leaving a population |
| limiting factor | environmental factor that prevents a populations from increasing |
| carrying capacity | largest population that an environment can support |
| natural selection | the process by which changes that make an organism better suited for its environment develop |
| adaptation | the behaviors and physical characteristics of a species that allow it live successfully in its environment |
| niche | an organisms particular role or how it makes its living within the ecosystem |
| competition | the struggle between organisms to survive in a habitat with limited resources |
| predation | the interaction where one organism kills and eats another |
| predator | the organism that does the killing |
| prey | the organism that is killed |
| symbiosis | a close relationship between two species that benefits at least one of the species |
| mutualism | a relationship in which both species benefit |
| commensalism | a relationship in which one species benefits |
| parasitism | a relationship in which one organism lives on or inside another organism and harms it |
| parasite | the organism that benefits during parasitism |
| host | the organism that the parasite is living on or in |
Combine with other sets
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