What useful things did ancient man do for nature?

Ancient man did not litter nature with garbage, exhaust gases and other harmful things from which the present world suffers. The environment did not suffer from chemical and biological weapons either.



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.