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eco sys 5th gr

5th Grade ecosystems

individual a single organism in an environment
population individuals of the same kind living in the same environment
community all the populations of organisms living together in an environment
habitat a place in an ecosystem where a population lives
producer an organism that makes it's own food
niche the roll each population has in it's habitat
consumers an organism in a community that must eat to get energy it needs
energy pyramid shows the amount of energy available to pass from one level of a food chain to the next
competition the contest among organisms for the limited resources of an ecosystem
instinct a behavior that an organism inherits
symbiosis a long term relationship between different kinds of organisms
learned behavior a behavior an animal learns from it's parents
extinct no longer in existence - discribes a species when the last individual of a population dies and that organism is gone forever
exotic an imported or non-native organism
endangered a term describing a population of organisms that is likely to become extinct if steps are not taken to save it
threatened describes a population of organisms that is likely to become endangered if they are not protected
eco system a community and it's physical environment together
decomposer composes and breaks down the tissues of dead organisms
food chain the ways in which the organisms in an ecosystem interact with one another according to what they eat
food web shows the interactions among many different food chains in a single ecosystem
Created by: jflaherty