Can one cell be an independent organism? How do you explain this?

Yes maybe. A cell is an elementary, minimal structural unit of any organism. It is autonomous, capable of division. Thanks to this property, multicellular organisms once appeared from unicellular organisms. When this question is considered, it is said that this is the cellular level of organization.

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.