Interactions Among Living Things (pgs. 522-531)

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Terms in this set (...)

natural selection
process by which individuals that are better adapted to the environment are more likely to survive and reproduce than others.
adaptation
the behaviors and physical characteristics of species that allow them to live
niche
an organism's particular role in an ecosystem or how it makes a living
competition
the struggle between organisms for limited resources in a habitat
predation
an interaction in which one organism kills and eats another
predator
the organism that does the killing in predation
prey
an organism that is killed in predation
symbiosis
a close relationship with two species that benefits at least one of the species
mutualism
a relationship between two species in which both species benefit
commensalism
a relationship between two species in which one species benefits and the other is neither helped or 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 a parasite lives in or on in parasitism

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