On the planet Sulvania, a mountain with an elevation of 1310 feet is the highest peak on the east coast of a land mass. The summit of the mountain is the first place on the land mass to be lit by the rays of the sun. How much sooner do the first rays of the sun touch the summit than the base of the mountain below, at sea level? Assume that one rotation of Sulvania takes 24 hours and that the radius of Sulvania is 2720 miles.

The answer is  a.first and third quarters 

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.