Final answer:
Comparing the bone structure of fossils with current animal species can support the theory of evolution by providing evidence of relatedness and common ancestry.
Step-by-step explanation:
Comparing the bone structure of fossils with current animal species provides evidence that some animals are related and share common ancestors, which supports the theory of evolution. By analyzing the similarities and differences in the bone structures, scientists can trace the evolutionary history of different species and identify patterns of change over time. For example, the presence of similar bone structures in different species suggests a common ancestor, while the presence of different bone structures indicates evolutionary divergence.
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