For life and development, mankind uses many of the riches of nature: the resources of the oceans; gifts of forests, fields; soil fertility; mineral substances from the bowels.
All natural resources need careful use and protection. It should be prevented from completely disappearing, as well as entering into the Red Book as endangered, many species of plants and animals. The next generations of people should not only see all the possible gifts of nature, but also increase them.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.