Trilobites are extinct marine invertebrates. Scientists found a trilobite fossil in layer 5, shown here. Fossils in which layer are likely to be slightly younger than this trilobite fossil? A. 6 B. 13 C. 1 D. 4

Science which of the following is an example of a cyclic behavior that is seasonal? i think the answer is d, i just need to double check : ). a. running from predators. b. searching for water. c. hunting at night. d. migrating for warmth. ***