It is not at all clear why the costs of serving a highly loyal customer should in principle be different from those of serving any other type of repeat customer.
According to their present distribution, the gen-era in the flora subregion can be classified into 15 areal-types and 14 subtypes, the species into 25 areal-types and 27 subtypes.
The results show that: 1)the vegetation in this areas can be divided into 15 communities, according to plant life-form, trees, shrubs, herbs have 4,6 and 5 types respectively.
Layer by layer, the material will be piled up and at last the workers will put them into a gauze cover. Pegged on various sizes and layers, different types of quilts will be made from the material.
The hypha expansion upward in the vessels of resistant cultivar was slower than that of susceptible one as result of limitation from short vessel elements.