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Environment Sec. 1-3
6TH GRADE Chapter 1- section 3 Environmental science vocabulary
Term | Definition |
---|---|
natural selection | Process by which individuals that are better adapted to the environment are more likely to survive and reproduce than others. |
adaption | The behaviors and physical characteristics of species that allow them to live successfully in their environments. |
niche | An organism's particular role in an ecosystem, or how it makes its living. |
competition | The struggle between organisms for the limited resources in a habitat. |
predation | An interaction in which on organism kills and eats another. |
predator | The organism that does the killing in predation. |
prey | An organism is killed in predation. |
symbiosis | A close relationship between species that benefits at least one of the species. |
mutualism | A relationship between two species which both species benefit. |
commensalism | A relationship between two species in which one species benefits and the other is neither helped nor harmed. |
parasitism | A relationship in which one organism lives on or inside another and harms it. |
parasite | The organism that benefits by living on or in a host in parasitism. |
host | The organism that parasite lives in or on in parasitism. |