What are the two zones of an aquifer?
a.) capillary fringe and water table
b.) zone of saturation and zone of unsaturation
c.) zone of aeration and zone of unsaturation
d.) zone of unsaturation and water table

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.

How many copies of genes do gametes have?

What gases are carried by the blood