If constant net force is applied to an object, and then suddenly its mass was reduced by half while the net force remains constant, what will happen to its acceleration?

The speed was not exceeded so it was slow

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.