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14 Cards in this Set

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Biosphere
part of earth that supports life, including the top portion of the earth’s crust, the atmosphere, and all water on earths surface.
ecosystem
all living organisms that live in the area and the nonliving features of their environment.
population
all the organisms that belong to the same species living in a community.
community
all the populations of different species that live in an ecosystem.
habitat
place where an organism lives and that provides the types of food, shelter, moisture and temperature needed for survival.
limiting factor
anything that can restrict the size of a population including living and nonliving features of an ecosystem, such as predators or drought.
carrying capacity
largest number of individuals of a particular species that an ecosystem can support over time.
producers
organism, such as a green plant or alga, that uses an outside source of energy like the Sun to create energy-rich food molecules.
consumers
organism that cannot create energy-rich molecules but obtains its food by eating other organisms.
symbiosis
any close relationship between species, including mutualism, commensalism, and parasitism.
mutualism
a type of symbiotic relationship in which both organisms benefit.
commensalism
a type of symbiotic relationship in which one organism benefits and the other organism is not affected.
parasitism
a type of symbiotic relationship in which one organism benefits and the other organism is harmed.
niche
in an ecosystem, refers to the unique ways an organism survives, obtains food and shelter, and avoids danger.