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eco sys 5th gr
5th Grade ecosystems
| Question | Answer |
|---|---|
| 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 |