The starting materials for photosynthesis – carbon dioxide entering the leaves from the air and water – are the products of the complete oxidation of carbon (CO2) and hydrogen (H2O). In organic substances formed during photosynthesis, carbon is in a reduced state. During photosynthesis, the СО2 – Н2О system, consisting of oxidized substances and located at a low energy level, is restored to a less stable СН2О – 02 system, which is at a higher energy level.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.