The vacuum inside the thermos bottle shown in figure 16-1 stops which type of thermal energy transfer to keep the liquid hot

True.it is better to buy a washer with a higher efficiency rating

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.

The statement that best describes the object on the right is a bar magnet with its north pole on the left.