What is the main type of energy conversion that happens as a skier goes down a hill?
A. Gravitational potential energy to kinetic energy
B. Heat energy to kinetic energy
C. Kinetic energy to gravitational potential energy
D. Kinetic energy to heat energy

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.