What substances are involved in two interrelated metabolic processes – respiration and photosynthesis? How are they formed?

Breathing and photosynthesis are not just interrelated processes, they are also opposite. And if organic matter (glucose) and oxygen participate in respiration, and water and carbon dioxide are formed. Then, during photosynthesis, the opposite is true – water and carbon dioxide are involved, and carbohydrate (glucose) and oxygen are formed. For example, glucose, which is involved in respiration, is formed during photosynthesis; by the way, oxygen is also released there. And the carbon dioxide and water needed for photosynthesis are obtained by breathing. Such is the cycle of substances.