Adog has a mass of 13kga. how much does the dog weigh on earth (g=9.8m/s2)? b. what is the mass of the dog on the moon? c. how much does the dog weigh on the moon (g=1.6m/s2)? d. why is g different for the moon and the earth?

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.

Ibelieve the answer is either b or c, but i'm leaning more towards c.hope my answer has you : )