If an air mass is sinking, it must be A. cold and less dense
B. warm and more dense
C. cold and more dense
D. warm and less dense

What organ systems are working to you cool down after a workout?

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 describes the changes in the earths motion?