Which statement is a testable scientific hypothesis

Rue or false siblings look simila rbecause they each have some traits of their parents.

Which best describes carbon dioxide’s path out of the body

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.