Describe briefly the structure and function of spinal cord?

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.

Animals that have thick fur and ae able to store large amounts of body fat live where ?

What are the subsystem of the earth