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science topic 6

populations, communities, and ecosystems

TermDefinition
niche includes how an organism obtains its food, the type of food the organism eats, and what other organisms eat it
competition the struggle between two organisms to survive with limited resources
predation one organism is the predator, and the other is the prey
symbiosis relationship in which two species live closely together
commensalism a relationship in which one species benefits and another species does not benefit but is unharmed.
mutualism a relationship in which both species are benefitted
parasitism when one organism is living with, on or inside another organism with damage to the organism also known as the host.
succession predictable changes that happen in a community ovecies is notertime
colonize come to settle
pioneer species lichen and moss
dominate having a commanding influence
biodiversity number and variety of species in one area
keystone species a species that highly influences other species survival.
economic relating to economics or economy
invasive species non native species
extinction disappearance of certain species
value ecosystems that provide large amounts of resources
ecosystem services benefits humans receive from ecosystems
ecology study of organism interaction
natural resource water, food, and fuels
conservation practice of using less of a resource
sustainability ability of an ecosystem to maintain biodiversity
ecological restoration practice of helping a degraded or destroyed ecosystem
regulation to keep similar, normal, or the same as
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