The schoolboy came out of the river, lay down on the sand, and grains of sand covered his body.
| August 28, 2020 | Education
The schoolboy came out of the river, lay down on the sand, and grains of sand covered his body. Why, when the body dried up, the grains of sand crumbled. Why?
Because the forces of attraction between water molecules on the human body and sand molecules are greater than between sand molecules and skin molecules.
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.