Explain why the middle sections of rivers have the greatest biodiversity.​

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

Wich of the following are manual restraint techniques for dogs

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.