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20 Cards in this Set

  • Front
  • Back
organisms
an individual animal, plant, or single-celled life form.
species
a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding
population
A population is a summation of all the organisms of the same group or species, who live in the same geographical area, and have the capability of interbreeding
communities
a group of people living in the same place or having a particular characteristic in common.
predation
the preying of one animal on others
competition
is an interaction between organisms or species, in which the fitness of one is lowered by the presence of another
parasitism
the relation between two different kinds of organisms in which one receives benefits from the other by causing damage to it (usually not fatal damage)
mutualism
is the way two organisms of different species exist in a relationship in which each individual benefits
commensalism
an association between two organisms in which one benefits and the other derives neither benefit nor harm.
adaptation
An alteration or adjustment in structure or habits, often hereditary, by which a species or individual improves its condition in relationship to its environment.
evolution
is defined as any genetic change in a population that is inherited over several generations.
natural selection
the process whereby organisms better adapted to their environment tend to survive and produce more offspring
co evolution
the influence of closely associated species on each other in their evolution.
extinction
the state or process of a species, family, or larger group being or becoming extinct.
niche
place or position
habitat
the natural home or environment of an animal, plant, or other organism
prey
an animal that is hunted and killed by another for food
host
a living cell in which a virus multiplies.
noun: host cell; plural noun: host cells
parasites
an organism that lives in or on another organism (its host) and benefits by deriving nutrients at the host's expense.
predator
an animal that naturally preys on others