Why is the airborne environment characterized by the greatest variety of organisms?

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.

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