The ground-air environment is characterized by a high oxygen content and intense streams of sunlight. Here opportunities are created for intensive metabolism and the development of rich vegetation. In the terrestrial-air environment, the existence of both moisture- and dry-loving species, both cold and heat-loving, is possible, depending on specific areas of the Earth. Significant environmental factors of this environment are rains, snow cover, wind, soil character, etc., which creates a wide variety of conditions for living organisms in different regions of the globe.
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.