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20 Cards in this Set

  • Front
  • Back
Ecology
Study of interactions that take place between organisms and their environment.
Biosphere
Portion of the Earth that supports living things.
Abiotic factors
Nonliving oarts of an organism's environment.
Biotic factors
Living organisms that inhabit an environment.
Population
Group of organisms that interbreed and live in the same area at the same time.
Biological community
Interacting populations in a certain area at a certain time.
Ecosystem
Population of plants and animals that interact with abiotic factors in the area.
Habitat
Place where an organism lives its live
Niche
All the strategies and adaptions a species uses in its environment.
Symbiosis
Relationship in which animals have permanent associations between different organisms.
Commensalism
Symbiotic relationship in which one species benefits and one is neither harmed, nor benefited.
Mutualism
Symbiotic relationship in which both species benefit.
Parasitism
Symbiotic relationship in which one species benefits, and one species is harmed.
Autotroph
Organism that uses light energy, or stored chemical energy to make energy-rich compounds.
Heterotroph
Organism that can't make its own food and feeds on other organisms.
Decomposers
Organims that breakdown compounds into simpler compounds to be absorbed
Food chain
Model scientists use to show how matter and energy move through an ecosystem.
Trophic level
Feeding step in a food chain.
Foobweb
Model that shows all the possible feeding relationships.
Biomass
Total weight of living matter at each trophic level.