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Ecosystem Ch 1 Vocab

Holt - Ecosystems Chap 1 Vocabulary 2012

organism one living individual
population a group of more than one of the same organism
community all the living organisms within an area
ecosystem a community of organisms and their abiotic environment
biosphere the part of Earth where life exists
producer Uses sunlight to make food
consumer Gets it energy from eating producers or other organisms
decomposer Get their energy by breaking down dead organisms - bacteria and fungi are examples
herbivore eats only planst
carnivore eats only animals
omnivore eats both plants and meat
food chain a diagram showing how energy in food flows from one organism to another
food web a diagram that shows the feeding relationship between many organisms in an ecosystem
biotic living
abiotic non-living (examples:water, rocks, light, temperature)
carrying capacity the largest population an evironment can support at a given time
mutualism symbiotic relationship - both organisms benefit (example: coral and algae)
prey an organism that is hunted and killed by another organism
commensalism symbiotic relationship - one organism benefits while not harming the host (example: Remora attached to shark or turtle)
predator an organism that hunts and eats another organism
parasitism symbiotic relationship - one organism benefits and harms host
symbiosis a relationship where two different organisms live in close association with each other
coevolution Change over long period of time that evolves two species - often a good change
Created by: lwinger