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33 Cards in this Set

  • Front
  • Back
Ecology
The study of the interactions between organisms and their environment
Biotic
Describes living factors in the environment
Abiotic
Describes nonliving factors in the environment
Population
A group of individuals of the same species that live together inj the same area at the same time
Community
All of the populations of different species that live and interact in an area
Ecosystem
A community of organisms and their nonliving environment
Biosphere
The part of the Earth where life exists
Herbivore
A consumer that eats plants
Carnivore
A consumer that eats animals
Omnivore
A consumer that eats a variety of organisms
Scavenger
An animal that feeds on the bodies of dead animals
Food Chain
A diagram that represents how the energy in food molecules flows from one organism to the next
Food Web
A complex diagram representing the many energy pathways in a real ecosystem
Prey
An organism that is eaten by another organism
Niche
An organism's way of life and its relationships with its abiotic and biotic environments
Energy Pyramid
A diagram shaped like a triangle that shows the loss of energy at each level of the food chain
Parasitism
A symbiotic association in which one organism benefits while the other is harmed
Carrying Capacity
The largest population that a given environment can support over a long period of time
Predator
An organism that eats other organisms
Symbiosis
A close, long-term association between two or more species
Mutualism
A symbiotic relationship in which both organisms benefit
Habitat
The environment where an organism lives
Commensalism
A symbiotic relationship in which one organism benefits and the other is unaffected
Coevolution
The long-term changes that take place in two species because of their close interactions with one another
Succession
The gradual regrowth or development of a community of organisms over time
Pioneer Species
The first organisms to grow in an area underging ecological succession; usually lichens in primary succession and fast growing, weedy plants in secondary succession
Tributary
A small stream or river that flows into a larger one
Littoral Zone
The zonej of a lake or 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 that is 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 surface 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