Which of the following statements is true about adaptations?
i. a species can adapt over the course of many generations.
ii. a single organism can adapt throughout its lifetime.
a neither i nor ii
b i only
c both i and ii

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.