Explain how your model demonstrated energy transformation from thermal energy to mechanical energy during a volcanic eruption.

(I mixed warm water, vinegar, and baking soda)

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.

Some plants have reproductive structures that them reproduce using natural forces or animals. how does the reproductive structure shown here ensure the reproductive success of plants?

In the first stage of the nuclear fuel cycle the spent fuel must be transported, processed, and disposed of properly. true or false