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Is the process by which traits that enhance survival and reproduction ate passed on more frequently to future generations than those that do not.
a group of islands in the Pacific off South America explored by Charles Darwin and Alfred wallce.
occurs when natural selection favors one of the extreme variations of a trait.
selection by humans for breeding of useful traits from the natural variation among different organisms.
The formation of a new species as a result of an ancestral population's becoming isolated by a geographic barrier.
geographic barriers to gene flow leads to evolution of reproductive isolation by natural selection.
The formation of new species in populations that live in the same geographic area.
a family tree that shows the evolutionary relationships thought to exist among groups of organisms.
The study of populations in relation to the environment, including environmental influences on population density and distribution, age structure, and variations in population size.
The study of how interactions between species affect community structure and organization.
The study of energy flow and the cycling of chemicals among the various biotic and abiotic components in an ecosystem.
A species use of resources and its functional role in a community including the environment it needs to survive, its consumption of certain foods, and its interactions with other organisms.
a distribution whose shape is evenly distributed throughout the values it takes.
distribution in which the location of members in a population is totally random.
Referring to any characteristic that varies according to an increase in population density.
organisms that reproduce early in life and often and have a high capacity for reproductive growth.
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