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Ch. 1, Sec. 3, Terms

Chapter 1, Section 3, Key Terms

QuestionAnswer
Natural Selection A characteristic that makes an individual better suited to its environment may eventually become common in that species through this process
Adaptaions Behabiors and physical characteristics that allow organisms to live successfully in their environments
Niche The role of an organism in its habitat, or how it makes its living.
Competition The struggle between organisms to survive as they attempt to use the same limited resource
Predation An interaction when 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 atleast one species
Mutualism A relationship when both species benefit
Commensalism A relationship when one species benefits and the other is unharmed
Parasitism A relationship when one species benefits and the other is harmed
Parasite The organism that benefits for parasitism
Host The organism the parasite lives on or in
McColl Simons Period 5
Created by: mc1023 on 2010-10-06



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