Examlex
According to the special theory of relativity,the duration between events depends upon the frame of reference in which those events are measured.In order to maintain a constant speed of light,what else must change between frames of reference?
Sympatric Speciation
The process of speciation that occurs when different species evolve within the same geographical area without physical barriers.
Geographical Region
An area of the Earth's surface characterized by distinctive physical, biological, and environmental conditions, often defined by natural or political boundaries.
Population
A group of individuals of the same species living in a particular geographic area and capable of interbreeding.
Allopolyploid
A polyploid whose chromosomes are derived from two species. Compare with autopolyploid.
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