Using radiometric dating, the age of a sedimentary rock in a rock layer is dated to 530 million years ago. A science student concludes that the fossils in the rock layer are also 530 million years old. Explain whether or not this conclusion is reasonable.

Which of these would most likely be a stimulus that would cause the body to initiate feedback mechanisms a.) normal body temperature in an arctic environment b.) normal boy temperature in a tropical environment c.)light physical activity d.)low blood sugar