Pick all of the benefits of mass transit systems select all that apply.
a-reduces highway congestion.
b-saves energy.
c-reduces air pollution.
d-limit the loss of land to roadways & parking lots.

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.