What is the role of viruses in nature and in human life?

Viruses cause diseases in animals, plants and humans. Some viruses provoke cancer. Bacteriophages are used by humans to fight disease-causing bacteria. Some viruses are used in genetic engineering because they are capable of transferring genes from one cell to another.

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.