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.