USA HISTORY

Detailed explanation-1: -The Neolithic or agricultural revolution resulted in a demographic transition and major increases in population (Table 6.1) and population density (Table 6.3). The population of hunter–gatherers rose at a very low rate constrained by the carrying capacity of the land (see Chapter 4, Fig. 4.1).

Detailed explanation-2: -As these early farmers became better at cultivating food, they may have produced surplus seeds and crops that required storage. This would have both spurred population growth because of more consistent food availability and required a more settled way of life with the need to store seeds and tend crops.

Detailed explanation-3: -Population growth is rapidly accelerating, intensifying the pressure on food production. This, in turn, leads to higher food insecurity, more greenhouse gas emissions, and large-scale environmental degradation. Food production, therefore, needs to adapt to accommodate a growing population and a changing climate.

Detailed explanation-4: -One of the most important innovations of the Agricultural Revolution was the development of the Norfolk four-course rotation, which greatly increased crop and livestock yields by improving soil fertility and reducing fallow.