Which organisms neither eat nor create their own food?

Moving down the ramp from 6 meters to

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.

Sequence how oxygen accumulated in the atmosphere and the effect it had on life by completing the flowchart