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24 Cards in this Set

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  • Back
carrying capacity
the largest population that a given environment can support over a long period of time
prey
an organism that is eaten by another organism
predator
an organism that eats other organisms
symbiosis
a close, long-term associations between two or more species
mutualism
a symbiotic ralationship in which both organisms benefit
commensalism
a symbiotic relationship in which one organism benefits and the other is unaffected
parasitism
a symbiotic associations in which one orangism benefits while the other is harmed
coevolution
the long-term changes that take place in two species because of their close interactions with one another
abiotic
describes nonliving factors in the environment
biome
a large region characterized by a specific type of climate and certain types of plant and animal communities
savanna
a tropical grassland biome with scattered clumps of trees
desert
a hot, dry biome inhabited by organisms adapted to survive high daytime temperatures and long periods without rain
tundra
a far-northern biome characterized by long, cold winters, permafrost, and few trees
permafrost
the permanently frozen ground below the oil surface in the arctic tundra
marine
describes and ecosystem based on salty water
phytoplankton
a micro scopic photosynthetic oranism that floats near the surface of the ocean
zooplankton
protozoa that, along with the phytoplankton they consume, form the base of the ocean's food web
tributary
a small stream or river that flows into a larger one
littoral zone
the zone of a lake or a pond closest to the edge of the land
open-water zone
the zone of a lake or pond that extends from the littoral zone out across the top of the water and thatis only as deep as light can reach through the water
deep-water zone
the zone of a lake or pond below the open-water zone where no light reaches
wetland
an area of land where the water level is near or above the suface of the ground for most of the year
marsh
a treeless wetland ecosystem where such plants as cattails and rushes grow
swamp
a wetland ecosystem in which trees and vines grow