3. which one of the following statements is accurate? a. the green revolution was instrumental in the increase of the world's food supply. b. gymnosperms provide humans with the most food. c. wheat, corn, soybeans, and cabbage are the main four plants responsible for providing food to people in the world. d. agriculture has been challenged by the use of selective breeding.

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.