The diagram shows a population of fish species that live in a river ecosystem.

A small part of the population is geographically isolated from the rest of the population when a dam is built. The diagram shows the population 100 years after the dam was constructed.

Which statement BEST describes what would occur between the populations if the dam were removed?

a
The two populations would be able to reproduce with each other because they have a common ancestor.
b
The two populations would not be able to reproduce with each other because they have different appearances.
c
The two populations would not be able to reproduce with each other because they became two different species.
d
The two populations would be able to reproduce with each other because they have the same resources available.

1 answer

The two populations would not be able to reproduce with each other because they have become two different species.