An airplane with a weight of 3500 N is flying through the air. The vertical lift on the plane is 4500 N, the friction with the air is 1500 N, and the force applied by the engines is 1250 N. Draw a free body diagram of this situation and find the net force acting on the airplane. Your work
should include both the size of the net force and the direction it points.

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.