Weebly

2. One early belief was that a healthy body required the proper balance of four humors. Which of the following is NOT a humor? a. blood. b. phlegm *c. green bile* d. black bile. 3. The cell theory, first proposed in 1839, allowed scientists to begin to understand that every complex life form begins as: a. an embryo. *b. a single cell. c. a fetus. ................
................