Describe the structure and function of nephron

Why does the skin of your finger shrink when you wash clothes for a long time?

What molecules does hemoglobin decay into over time

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.