1. The Beef Industry Council claims that beef is a necessary part of a healthy diet, while Neal D. Barnard promotes a meat-free diet as the healthiest. The Beef Industry Council is part of the National Live Stock and Meat Board, which promotes beef consumption. Neal D. Barnard is a physician. Does the background of the authors affect the credibility of their viewpoints? Why or why not? 2. Nathaniel Mead claims that the benefits of milk consumption are exaggerated and that milk actually causes many health problems. What evidence does he use to support his argument? Kathleen Meister argues that the absence of milk in the diet, especially that of children, can lead to health problems. What evidence does she use to support her argument? Whose viewpoint do you find more compelling? Why? 3. Geoffrey Cowley maintains that using vitamin supplements can ward off a host of serious illnesses...