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Chapter 21!

QuestionAnswer
the parts of Earth and the surrounding atmosphere where there is life biosphere
all the populations living in an ecosystem at the same time community
all the organisms of the same species that live in the same area at the same time population
the demand resources, such as food, water, and shelter, in short supply in a community competition
a factor that can limit the growth of a population limiting factor
the size of a population compared to the amount of space available population density
he potential growth of a population if it could grow in perfect conditions with no limiting factors biotic potential
the largest number of individuals of one species that an ecosystem can support over time carrying capacity
the number of offspring produced by a population over a given time period birthrate
the number of individuals in a population that die over a given time period death rate
a species that had died out and no individuals are left extinct species
a species whose population is at risk of extinction endangered species
a species at risk, but not yet endangered threatened species
the instinctive, seasonal movement of a population of organisms from one place to another migration
the place within an ecosystem where an organism lives; provides the biotic and abiotic factors on an organism needs to survive and reproduce habitat
the way a species interacts with abiotic and biotic factors to obtain food, find shelter, and fulfill other needs niche
an organism that uses an outside energy source, such as the sun, and produces its own food producer
an organism that cannot make its own food and gets energy by eating other organisms consumer
a close, long-term relationship between two species that usually involves an exchange of food or energy symbiosis
a symbiotic relationship in which both organisms benefit mutualism
a symbiotic relationship that benefits one species but does not harm or benefit the other commensalism
a symbiotic relationship in which one organism benefits and the other is harmed parasitism
Created by: MMora!
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