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Unit B, Ch.5

niche the role of an organism in the community
community all the populations in an area (all the living things)
population all the organisms of a particular species living in the same area
abiotic factor the nonliving parts of an ecosystem
ecology the study of how all things in an ecosystem interact
biotic factor the living parts of an ecosystem
ecosystem all the living and the nonliving things in an area
habitat a place where an organism lives
carnivore organisms that eat animals for energy
producer organisms that make their own food
food chain one path of energy in an ecosystem from producers to consumers to decomposers
prey an organism that is hunted by another organism
omnivore an animal that eats both animals and plants
mutualism a symbiotic relationship that benefits both organisms
commensalism a symbiotic relationship in which one organism benefits from another without harming or hurting it
parasitism a symbiotic relationship in which one organism lives off the resources of another
symbiosis a close relationship between organisms that lasts over a period of time
scavenger organisms that get energy from the remains of dead organisms
predator an organism that hunts other organisms for food
herbivore organisms that eat producers (green plants) for energy
food web shows the relationship between all the species in a community (show how the energy travels)
endangered species a species in danger of becoming extinct
threatened species a species that may become endangered(not currently endangered)
carrying capacity the maximum population size that the resources in an area can support
extinct a species that has died out completely (no longer on Earth)
limiting factor anything that controls the growth or survival of a population
Created by: mrskarney