Q1. Trace a drop of blood from tissue cells of the left knee to capillaries of the right arm. Be sure to stop at the lungs along the way! Keep track of the left and right sides of the heart, and mention all the valves through which the blood travels.

Q2. When we search the fossil record, we find all sorts of living organisms. Humans appear to be the most highly evolved species to date, but we don’t know what lies in the future. Based on what you have learned in this class, was the development of intelligent life an inevitable consequence of natural selection and Why or why not?