4. Why are fossils of the animal Archaeopteryx used as evidence that birds and dinosaurs may be related? *
In each answer, "they" is referring to the Archaeopteryx fossils.
A. They were older than dinosaurs, but not as old as birds.
B. They have some characteristics of both birds and dinosaurs.
C. They were not able to survive as well as birds, but better than dinosaurs.
D. They were found near both bird and dinosaur fossils in rock layers.