15.

In the early 1800s, Darwin studied 13 kinds of finches. What did Darwin hypothesize about these birds?

The finches were different species that shared a common ancestor.

The different finches could breed and produce fertile offspring.

All 13 kinds of finches belonged to the same species.

Their speciation took millions of years.

1 answer

The finches had adapted to their specific environments and developed different beak shapes and sizes to better suit their diets.