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Living Things

Key Words Ch.1 Sec.3

natural selection a characteristic that makes an individual better suited to its environment
adaptations the behaviors and physical characteristics that allow organisms to live successfully in their environment
niche an organisms role in its habitat
competition the struggle between organisms to survive as they attempt to use the same limited resource
predation interaction in which one organism kills another for food
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 where one species benefits, and the other species isn't helped or harmed
parasitism involves one organism living inside another and harming it. one benefits, and one is harmed
parasite the organism that BENEFITS in the parasitism relationship
host the organism that the parasite lives in or on and is HARMED
Created by: ekehoe123