Interdependent Relationships in Ecosystems Vocabulary

Term Definition
abiotic factor a nonliving part of an organism's habitat
biotic factor a living part of an organisms habitat
habitat an environment that provides the things an organism needs to live, grow, and reproduce
climate the typical weather pattern in an area over time
dispersal the movement from organisms from one place to another
biogeography the study of where organisms live
biome a group of land ecosystem with similar climates and organisms
aquatic ecosystem an organism where the organisms spend majority of their life in water
primary succession the series of changes that occur in an area where no soil or organism exist
secondary succession the series of changes that occur in an area where the ecosystem has been disturbed but where soil and organisms still exist
limiting factor an environmental factor that causes a population to decrease
symbiosis a close relationship between two species that benefits at least one of the species
competition the struggle between organisms to survive as they attempt to use the same limited resources
mutualism a relationship between two species in which both species benefit
commensalism a relationship between two species in which one species benefits and the other is neither helped nor hurt
parasite the organism that benefits by living on or in a host in a parasitism (parasitic) intereaction
host the organism that a parasite lives in or on in a parasitism (parasitic) interaction
predator the organism that does the killing in a predation interaction
prey an organism that is killed and eaten by another organism

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