Question

question 39 1 pts which of the following does not provide an example of geographic isolation? two squirrel populations live on opposite sides of a wide, deep river. two bird populations live on adjacent mountains with a narrow valley between them. two snail populations live in two valleys on opposite sides of a mountain range. two fish populations live in different lakes.

Explanation:

Geographic isolation occurs when a physical barrier separates populations. In all options except one, there are physical barriers like rivers, mountains, and different lakes. The option with adjacent mountains and a narrow valley may not fully isolate bird populations as birds can easily fly over the valley, reducing isolation.

Answer:

Two bird populations live on adjacent mountains with a narrow valley between them.