Most fad diets focus on restricting certain types of foods and nutrients. What do you think would happen if someone ate an extremely low-protein diet without the approval of a doctor? What side effects might the person experience?

Which of the following statements best distinguishes a hypothesis from a theory? a. theories are hypotheses that have been proved. b. hypotheses are guesses; theories are correct answers c. hypotheses usually are relatively narrow in scope; theories have broad explanatory power. d. theories are proved to be true; hypotheses are often contradicted by experimental results.