One reason is because of the economy in the community. Others reasons may include because of the schools and because of culture changes.
Human activities, bioinvasion and catastrophic
It is called genetic drift.
does the melting point of a substance change over time
It does and will change over a length of time.
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Speciation is the process by which new biological species arise. It is part of the evolutionary process; how two or more populations of one species, when separated geographically, can gradually change over time in different ways, to become separate species.
by plants moving
Evolution i think
Change over time in populations of organisms. Or, more formally; the change in allele frequency over time in a population of organisms.
Evolution is the change in the frequency of alleles of a population of organisms over time.
new species form.
it is evolution
It is called genetic drift.
Evolution is the change in allele frequency over time in a population of organisms.Short answer, populations are the only thing that evolves. Individuals die. Traits are passed on to progeny that make up the variations in the populations that evolve.
It should expand into the ranges of both parental populations
They change over time in response to factors in the environment such as weather and food supplies.