chapter 9 : The United States and China have virtually identical fertility rates (1.7) and median ages (38.35). How, then, would you account for the fact that the population of China is projected to decrease between now and the end of this century, whereas the population of the United States is projected to increase? Question 28Select one: a. population momentum in the United States b. immigration into the United States c. enforced family planning in China d. better health care in the United States