Question

unit review - evolution of populations
reviewing the additional information and image(s) will help you answer this question. why do zygotes not form between organisms that are isolated by temporal differences?
because all of the organisms are too old or too young to breed
because temporal isolation causes organisms to not encounter each other and breed
because the organisms are separated by a physical barrier

Explanation:

Temporal isolation is a pre - zygotic reproductive barrier where species breed at different times, so they don't meet to mate and thus zygotes don't form.

Answer:

because temporal isolation causes organisms to not encounter each other and breed