an organism's environment
parts of the habitat that are living
parts of the habitat that are non-living
a group of organisms that can mate with each other and produce fertile offspring
all the members of one species living in a particular area
all the different populations that live together in an area
the community of organisms that live in a particular area along with their nonliving environment
the study of how organisms interact with each other and with their environment
the number of births per 1,000 individuals
the number of deaths per 1,000 individuals
when individuals move into a population
when individuals move out of a population
the number of individuals in an area of specific size
an environmental factor that causes a population to stop growing or decrease in size
largest population that an area can support
Individuals whose unique characteristics are well suited for an environment tend to survive and produce more offspring. Those unique characteristics are called adaptations.
the role of an organism in its habitat
the struggle between organism to survive as they attempt to use the same limited resources
when an organism kills another one for food or nutrients
the organism that does the killing
the animal that is killed
any relationship in which two species live closely together and at least one of the species benefits
a relationship where both species benefit
a relationship in which one species benefits and the other species is neither helped nor harmed
a relationship that involves one organism living with, on, or inside another organism and harming it
the series of changes that occurs in an area where no soil or organisms exist
the first species to populate an area
the series of changes that occurs in an area where the ecosystem has been disturbed, but where soil and organisms still exist
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