Abeka - Biology - PG 293-312
Terms in this set (59)
A biological community of interacting organisms and their physical environment.
What are the two categories of an ecosystem
terrestrial and aquatic
All the different populations that live together in an area
A group of individuals that belong to the same species and live in the same area
individual living things
the number and variety of species living within an ecosystem
the ability of the cosystem to support organisms
The range of environmental conditions over which an organism performs best and can reproduce.
Any biotic or abiotic factor that restricts the existence, numbers, reproduction, or distribution of organisms.
get energy from the sun
autotrophs that obtain energy from chemical substances rather than from sunlight
Consumers that eat only plants
Consumers that eat only animals
eat both plants and animals
Dead organic matter
bacteria and fungi that feed on detritus by secreting enzymes that break it down into smaller molecules
feed on plant and animal remains and other dead matter. They only help in breaker detritus into smaller pieces
Each step in a food chain or food web
Producers are which tropic level
What is a top carnivore
The top of the food chain or web
A series of steps in which organisms transfer energy by eating and being eaten
primary consumers (herbivores)
carnivores that eat herbivores
The function or position of a species within an ecological community.
A diagram that shows the amount of energy that moves from one feeding level to another in a food web
represents the amount of living organic matter at each trophic level
represents the number of organisms at each tropic level and shows that population size usually decreases at each higher tropic level
both organisms benefit
One organism benefits and the other is harmed
one organism benefits and the other is unaffected
An interaction in which one organism kills another for food.
the struggle between organisms to survive in a habitat with limited resources
One organism inhibits another
organisms share only an indirect relationship
An interaction in which an herbivore eats parts of a plant or alga
biogeochemical cycles that refer specifically to the movement of life's essential chemicals or nutrients through an ecosystem
the movement of water through the biosphere
what are the three steps of the hydrologic cycle
evaporation condensation and precipitation
carbon cycle and nitrogen cycle
phosphorus and sulfur
A stable, mature community that undergoes little or no change in species over time
This biome supports a low number of plant species, receives little rain, and plants have shallow root zones due to permafrost and wet soil.
Ground that is permanently frozen
tundra near the peak of a mountain
northern coniferous forest
boreal forest or taiga
hard winters longer summers
elk migratory birds wolverines
temperate deciduous forest
forest in a temperate region, characterized by trees that drop their leaves annually
A biome where grasses are the main plant life
An area of grassland with scattered trees and bushes
An extremely dry area with little water and few plants
tropical rain forest
Biome near the equator with warm temperatures, wet weather, and lush plant growth
what are the main two parts to the aquatic biomes
freshwater and marine
A habitat in which the fresh water of a river meets the salt water of the ocean.
a ridge of rock in the sea formed by the growth and deposit of coral.
Portion of the shoreline that lies between the high and low tide lines
regions that extend past the intertidal zone until you reach the edge of the continental shelf
extend from the continental shelves into the open ocean
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