GB Wilson - 6th Gr Ecosystems

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Terms in this set (24)
parasitean organism that lives on or in a host and causes harm to the hostpredatoranimal that hunts and eats other animalspreyanimal hunted or caught for foodsymbiosisthe living together in mutually helpful association of two dissimilar organisms; both organisms benefitcompetitionthe struggle between organisms to survive in a habitat with limited resourcespollutionundesirable state of the natural environment being contaminated with harmful substances as a consequence of human activitiesresource depletionto use up the supply of a resourcespecies extinctionWhen all organisms of a single species die.ecological rolethe role, job, that something has in an ecosystem; a nichenichethe ecological "job and address" of a plant or animal in nature.climate changea long-term change in weather patterns in a given areaenvironmental impactThe consequences for the environment of human actions (deforestation, oil spills, etc.) and natural occurrences (floods, earthquakes, volcanoes, etc.)habitatthe place or set of environmental conditions in which a particular organism livesfood websA complex diagram representing the many energy pathways in an ecosystem