Question

unit exam - 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 ecologically isolated?
because the ecologically isolated organisms rarely encounter one another so they do not breed
because all of the organisms are too old or too young to breed
because ecological isolation causes all organisms to lose their fertility

Explanation:

Ecological isolation means organisms occupy different habitats or ecological niches, reducing the chance of meeting and mating, thus preventing zygote - formation.

Answer:

because the ecologically isolated organisms rarely encounter one another so they do not breed