The gradual change in a species over a long period of time.
A change or alteration in form or DNA sequence of organisms.
The natural process resulting in the evolution of organisms best adapted to the environment.
Scientist who formulated a theory of evolution and natural selection.
Came to a similar conclusion as Darwin with the theory of natural selection.
Islands where Darwin observed different animals and their attributes.
Occurs when natural selection favors one trait over another.
Natural selection that favors the average individuals in a population.
Natural selection that favors the individuals with extreme traits.
The selection by humans for breeding different organisms using perfect traits.
The variation of species living within an ecosystem.
A group of similar organisms that can breed and produce offspring.
A group of organisms of the same species populating a given area.
The formation of new species because of evolution.
The formation of new species in populations that are geographically isolated from one another.
The physical separation of members of a population.
The formation of new species in populations that live in the same geographic area.
A diagram showing evolutionary relationships of organisms with a common ancestor.
The mass killing off of most species.
Different populations that live together in an area.
All the living and non-living things that live in an area.
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 factors in an ecosystem.
The place where an organism or animal lives.
The status of an organism within its environment and community.
Species that have narrow niches.
An area with a high population.
An area with population that is spread out evenly.
Survivorship Curvers I, II, III
The three curves showing the rate of survival.
A way to show the number of organisms alive in particular age groups of a population.
The growth pattern of how individuals in a population reproduce at a constant rate.
The growth pattern of how a population's growth rate slows or stops following a period of exponential growth.
The largest number of individuals of a population that a environment can support.
Conditions in the environment that put limits on where an organism can live.
Density - Dependent
Any characteristic that varies according to an increase in population density.
Density - Independent
Any characteristic that is not affected by population density.
R - Selected
Term showing that an organism can produce a large number of offspring in a relatively short time but do not care for their young after birth.
K - Selected
Organisms that reproduce later in life, produce fewer offspring and devote significant time and energy to the nurturing of their offspring
The population area is random.