__________ are physical changes in organisms that help them survive in specific environments, and they provide clear evidence of evolution.

The evolution of horses is an example of __________ through changes in traits.

The human appendix is an example of __________, a body part that has lost its function.

__________ happens when different species develop similar traits due to similar environments, like dolphins and sharks.

__________ are similar body parts in different species that have a common ancestor.

__________ explains how one species can evolve into many, like Darwin’s finches.

__________ shows how DNA changes lead to physical traits, like polar bear fur.

__________ studies how small genetic changes lead to changes in body parts.