Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, these bones having developed from very similar embryonic tissues. How do biologists interpret these similarities?

By predicting that the organisms have originated from a common ancestor

Explanation:

In the given case, the bones of the arms of the human, the flippers of the dolphin and the wings of a bat are similar in their structure.

This similarity is structure shows that at some point in time they could have shared a common ancestor. Although these structures performed different functions they are similar in their appearance. Such structures are known as homologous structures.

Thus, By predicting that the organisms have originated from a common ancestor is correct.

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.