One hypothesis suggests that the Cambrian explosion was caused by the rise of predator-prey relationships. This hypothesis is best supported by an increased incidence of which of the following fossil traces?
A) worm burrows
B) larger animals
C) organic material
D) hard parts

Question

Quizplus · Accepted Answer

The rise of predator-prey relationships is believed to have driven the evolution of hard parts, such as shells, spines, and exoskeletons, for protection and defense. Therefore, an increased incidence of fossilized hard parts would support this particular hypothesis.

One Hypothesis Suggests That the Cambrian Explosion Was Caused by the Rise