1) the destruction of weeds, which are natural competitors of cultivated plants;
2) when digging a large amount of organic substances (aboveground and underground shoots, roots of dead plants, organic fertilizers) is under a layer of earth, where they are actively decomposed by soil microorganisms. As a result, the resulting substances become available to plants;
3) loose soil is better saturated with water and freezes longer.
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.