Examlex
A demand curve shows the relationship between price and quantity demanded only so long as all other things are held constant.
Isthmus Of Panama
A narrow strip of land connecting North and South America, with the Caribbean Sea to the east and the Pacific Ocean to the west.
Sympatric Speciation
The process by which new species evolve from a single ancestral species while inhabiting the same geographic region.
Sister Groups
The two lineages that emerge from a node on a cladogram.
Hardy-Weinberg Equation
A principle used in genetics to calculate the frequency of alleles and genotypes in a population's gene pool under ideal conditions.
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