Earthworms play an important role in changing the structure and increasing soil fertility.

1) earthworms, moving in the soil, mix it and make it looser;
2) absorbing plant residues, passing them through the digestive system, they enrich the soil with humus.

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.