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
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.
the ways in which the organisms in an ecosystem interact with one another according to what they eat
shows the interactions among many different food chains in a single ecosystem
place in an ecosystem where a population lives
behavior that organism inherits
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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