Which type of cloud is shown in this image?

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.

Explain how light energy is turned into chemical energy? ! due tomorrow!

What determines whether a particular cell is able to respond to a hormone?