A scientific theory is best described as

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 do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?

How far away is the nearest black hole from earth?