Question

two species of garter snake in the genus thamnophis originated from a single ancestor. these two species live in the same geographic area; however, one lives in and land and the other lives in water. which of the following best identifies the cause of speciation between these two garter snakes? habitat isolation allopatric isolation behavioral isolation mechanical isolation

Explanation:

Habitat isolation occurs when two species live in the same geographic area but different habitats (e.g., land vs. water). Allopatric isolation requires physical separation of populations. Behavioral isolation is due to differences in behavior (e.g., mating calls). Mechanical isolation is related to physical incompatibility in reproduction. Here, the snakes are in same area but different habitats (land and water), so habitat isolation.

Answer:

habitat isolation