Answer:
1.By comparing the skeletons of different species, scientists can see patterns of how traits have been passed down. When two species' body structures are made from bones that are in the same pattern and roughly the same position in the body, scientists consider them to be shared body structures.
2.Bone structures that are similar between the Mystery Fossil, whale, and wolf include the skull, teeth, neck bones, "one, two, many" front limb structures, rib bones, back bones, tails, and pelvises.
Step-by-step explanation:
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