1) Organic substances have a complex structure and are constantly broken down in the process of metabolism.
2) Organic substances are sources of food and energy, as well as building material for the body.
3) Since food and energy are constantly consumed, it is necessary to replenish their reserves.
4) From the amino acids entering the cells, the body’s own proteins are synthesized.
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.