What's the answer pls. it's for my bff

In which situations is the principle of cross-cutting relationship useful in determining relative age?

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.

Jason puts an apple on top of an ice pack in his lunch bag lunch time the temperature of the apple has decreased what happens to the molecules in the apple when the temperature of the apple decreases