Skeletal muscle: select one or more: a. is voluntary b. is striated c. has no nucleus d. is found primarily around organs and blood vessels e. must have nervous input to work f. is abundant in the heart wall g. is un-striated h. is involuntary

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.