Mountain range divides a freshwater snail species into two isolated populations. Erosion eventually lowers th?

Question

a. gradualism.

b. incipient speciation.

c. allopatric speciation.

d. punctuated equilibrium.

e. sympatric speciation

Answer 1

c.

allopatric speciation is commonly known as "geographic speciation"

Answer 2

Erosion can lower the barrier between the populations, which may have been separated long enough to have become mutually infertile (i.e., separate species).