3. the algae in thermal springs, such as old faithful in yellowstone park, have temperatures above 100c. does this mean the optimal temperature for different enzymes in different organisms may vary?

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.