ABSTRACT
Of all earth’s bountiful resources, mankind can look to soil, water, air, and solar energy as the most indispensable for continued life on the planet. The combination affords the requisites for photosynthesis to occur, the fundamental process behind essentially all food production. Perhaps the most fragile and limiting among these resources is the soil, which can be maintained in a productive state over an indefinite period with proper management, but which can be destroyed within a few years by poor management.
