Question

1. if two gene pools become separated due to a physical barrier like a mountain range, this is dropdown isolation. behavioral if the 1 geographic behav temporal different mating reeding, this is

Explanation:

Geographic isolation occurs when a physical barrier such as a mountain range separates gene - pools, preventing gene flow between them. Behavioral isolation is due to differences in behavior like mating rituals, and temporal isolation is due to differences in breeding times. Since the separation here is caused by a physical barrier (mountain range), it is geographic isolation.

Answer:

geographic