Answer:

• Human arm bones are very similar to the bones in a birds wing and a dolphin's flipper.(Bird)
• These organisms share the same forearm bones because they all evolved from a common ancestor.(Bats)

Explanation:

An example of homologous structures are the limbs of humans, cats, whales, and bats. Regardless of whether it is an arm, leg, flipper or wing, these structures are built upon the same bone structure. Homologies are the result of divergent evolution