What combines with hydrogen during aerobic cellular respiration

Chicken pox and hepatitis are bacterial diseases. true or false?

Compare the composition of the moon's surface with the composition of the earth's surface.

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.