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Environment Sec. 1-3

6TH GRADE Chapter 1- section 3 Environmental science vocabulary

TermDefinition
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.
Created by: 20pennel
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