Why earthworms avoid waterlogged areas of soil and crawl out onto its surface.

1) Earthworms breathe the entire surface of the body.
2) In waterlogged areas of the soil there is little oxygen, so the worms crawl to the surface

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.