Why do fish need secrets secreted by various skin glands?
| December 17, 2020 | education
In order to scare off enemies and to reduce friction in the water, so that it glides easily.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
