Variation affects how an organism can live and exploit its environment.

This bar graph shows the difference in beak sizes among three different Galápagos finch species.

Looking at the graph, which statement is true? Click on the best answer.

1. There is no difference in beak size among the species

2. Beak size is directly related to the food the finches eat

3. Geospiza scandens have the shortest beaks

Histogram graphic © UCMP.