Which rock is sedimentary in origin and formed as a result of chemical processes?

Which part of cellular respiration must occur before any of the other steps can occur

In what part of the body does the most muscle activity happen?

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.