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20 Cards in this Set

  • Front
  • Back
R selected species
Opportunistic species which often show exponential growth
Carrying capacity
The maximum population size that can be supported by the avaliable resources, K
Mutualism
A symbiotic relationship where both organisms benefit
Food web
Describes all the feeding relationships within a community
Decomposer
A consumer that derives its energy from organic wastes and dead organisms representing all trophic levels
Saprobe
An organism that acts as a decomposer by absorbing nutrients from dead organic matter
Omnivore
Organisms that eat both plants and animals
Competitive Exclusion Principle
The hypothesis that 2 species with identical niches cannot coexist in the same habitat
Abiotic factor
Nonliving factor that affects the community
Pyramid of numbers
A relationship showing the numbers of organisms in each trophic level
Food chain
The transfer of energy from one organism to the next
Pyramid of energy
Grpahical relationship of how energy flows from one trophic level to the next
Succession
A gradual process of one community replacing another
Niche
The role an organism plays, how it interacts in the environment
Biosphere
The zones of air, land, and water occupied by all living things
Biome
One of the major types of distinctive plant communities
Logistic growth
A model describing population growth that levels off as population size approaches carrying capacity
Population
A group of the same species living together in the same place at the same time
Habitat
The place where an organism lives
Ecosystem
Relationship between the living community and the physical environment