Abstract:This paper approaches to the nature and evidences of compensation, its levels occurred and conditions required, and its strong implications for agricultural pest control. In the long process of adaptation, an organism acquires adaptative experience or environmental information,generalizing the gonetic information, and constituting the property or ideal niche of the species, As enviornment fluctuates continuously, the realistic niche is, deviating continuously from the ideal niche. The combination of materia...