And how prevent the degradation rangelands maintain sustainability yes

3) 

The social relationship differs in terms of an economic system, political system, marriage, religion, kinship systems. As one of the characteristics of the foraging societies is their egalitarian social structure and they do not share the food however in horticulture they are grouped in a single kin group and share foods. Whereas in Pastoralism the kin group is large with land rights.