How would scientists determine that punctuated equilibrium occurred by examining the fossil record?

Place the steps tor the formation of the enzyme pepsinogen in correct order

How does this experiment explain why it is often milder in areas such as coastal maryland while areas such as kansas or iowa have more extremes in temperature

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins