Question

the lava released by a volcanic eruption separates two populations of a species of monkey. what does this represent?
biological isolation
geographical isolation
temporal isolation
anatomical isolation

Explanation:

Geographical isolation occurs when a physical barrier like lava separates populations. Biological isolation involves reproductive barriers, temporal isolation is due to different breeding times, and anatomical isolation is related to physical - structure incompatibilities. Here, the lava is a physical geographical barrier.

Answer:

B. geographical isolation