What is the primary reason that there are so many species of land snails in the Hawaiian Islands?
A) They have complex social behaviors.
B) They have excellent dispersal ability.
C) They pollinate many flowers.
D) They move slowly.
E) The high ridges separating valleys are a barrier to their dispersal.

Question

Quizplus · Accepted Answer

The high ridges separating valleys in the Hawaiian Islands act as a barrier to snail dispersal, leading to isolated populations and ultimately speciation.

What Is the Primary Reason That There Are So Many