Using complete sentences, explain why a lunar eclipse can only occur during the full moon phase. Explain why Earth does not experience a lunar eclipse during every lunar cycle's full moon.

Classify the descriptions and examples as endocrine or neural control

Explain how scientists use geologic time to determine the age of landforms.

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.