Tectonic plates are large segments of the earth's crust that move slowly. Suppose that one such plate has an average speed of 4.0 cm/year. What distance (in nanometers, 10-9 m) does it move in 1.0 s at this speed

It's have to be 12 or idk

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.