interdependence, The idea that all living things in an ecosystem rely on each other for survival., species, A particular type of organism that is different from other kinds, even if they are closely related. (examples: black bears, grizzly bears, polar bears), mutualism, A long-term relationship between two different species where both species are helped., parasitism, A long-term relationship between two different species where one species is helped and the other species is harmed., commensalism, A long-term relationship between two different species where one species is helped and the other species is not affected., coexistence, A short-term interaction where two organisms live near each other, but neither organism is helped or harmed., cooperation, A short-term interaction where organisms of the same species work together and help each other survive., competition, A short-term interaction where organisms struggle for the same limited resource. Both organisms can be harmed because each may get less of what it needs., predation, A short-term interaction where one organism hunts, kills, and eats another organism. The predator is helped, and the prey is harmed..

Interactions & Relationships

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