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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.
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
Short and sweet description. Natural selection is the nonrandom survival and reproductive success of randomly varying organisms. Variation. Struggle for existence. Selection. Heritability of traits. Adaptation of populations to environment. Leading to allele frequency change in populations over time; evolution.
new species form.
Evolution is the change in the frequency of alleles of a population of organisms over time.
inheritable