The process of cellular respiration a) occurs only in animals. b) breaks down food molecules to release stored energy. c) must occur before plants are able to carry out photosynthesis. d) is performed only by organisms that are incapable of photosynthesis.

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.

Which soil would most likely be found in the arctic? andisols gelisols histosols spodosols

Evolution acts upon the population of organisms and not on each individual organism