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Organisms and Ecosys

Savvas Topic 8

QuestionAnswer
ecosystem all the living things in a particular area, along with the nonliving parts of the environment they interact with
organism each individual living thing
habitat The environment that provides an organism with the things it needs to live, grow, and reproduce
population all the organisms of one species living in the same area
species a group of similar organisms that can produce offspring and whose offspring can also mate and reproduce
community all the populations that live in an ecosystem together
biotic factors living or once-living parts of an organism’s habitat
abiotic factors any required factor that restricts, or holds back, the growth of a population
competition the struggle between organisms to survive as they attempt to use the same limited resources in the same place at the same time
predator an organism that kills another for food or nutrients
prey an organism that is killed or hunted by another
symbiosis a relationship in which two organisms live together and at least one benefits
mutualism a symbiotic relationship between members of two species in which both benefit
commensalism a symbiotic relationship in which one species benefits and the other species is neither helped nor harmed
parasitism features that make organisms different from one another
variation any difference among individuals of the same population that is passed on from the previous generation
behavioral variation difference in the way organisms in the same population act
physical variation difference in the body structures of organisms in the same population
Created by: vjazquez
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