In what era were ferns the dominant group among living organisms?

IN PALEOSO, when a huge number of various forms of ferns, horsetails and lymphoids (including tree-like ones) lived on Earth.



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.