Vallejo Science Unit B Chapter 2

20 terms by dannydougherty5 

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all the populations of organisms living together in an environment


organism in a community that must eat to get the energy it needs


consumer that breaks down the tissues of dead organisms


a community and its physical environment together


term describing a population of organisms that is likely to become extinct if steps are not taken to save it

energy pyramid

shows the amount of energy available to pass from one level of a food chain to the next


imported or nonnative organism


no longer in existence; describes a species when the last individual of a population dies and that organism is gone forever.

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


place in an ecosystem where a population lives


behavior that organism inherits

learned behavior

behavior an animal learns from its parents


the role each population has in its habitat


all the individuals of the same kind living in the same environment


organism that makes its own food


long-term relationship between different kinds of organisms


describes a population of organisms that are likely to become endangered if they are not protected


the contest among organisms for the limited resources of an ecosystem


a single organism in an environment

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