In real life the animal probably uses some of the water molecules in its body instead of exhaling them. The picture does not show the energy that is released and used by the animal. Plants use carbon dioxide, water, and sunlight to make glucose. Plants release water and oxygen that animals breathe in. Plants build themselves with carbon from the carbon dioxide in the air.
Animals use oxygen, water, and glucose to release the stored energy in plants.
Animals breathe out water and carbon dioxide molecules that the plants use. The system is dependent on solar energy to power photosynthesis. Elizabeth Anne Viau and her licensors. All rights reserved. This material may be used by individuals for instructional purposes but not sold.