close (in/on/near) relationship between 2 organisms
(+,0)---One organism benifits-no effect on the other
(+,-)---One benefits, and one is harmed (host)
ie: intestinal worm
eats dead organisims-usually does not kill for food
Struggle for resources-between species or within a population
all members of a species in an ecosystem
smaller area that is measurable (lake/pond)-may be different than biome
all living organisms in an ecosystem
area where life occurs of earth
large geographical area of similar plants and animals(climate driven)-temperaature-precipitation
where an organism lives (hollow tree)
what an organism does or is. Its role in the ecosystem
living factors in an ecosystem
non-livng factors in the ecosystem
the number of individuals in a specific area
the number of births in a population in a cartain amount of time
the number of deaths in a population in a certain amount of time
moving into a population
leaving a population
an environmental factor that prevents a population from increasing
largest population that an environment can support
an interaction in which one organism hunts and kills another for food
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