WORLD HISTORY

Detailed explanation-1: -Improvements in crop yields have been essential to feed a growing population, while reducing the environmental impact of food production at the same time. By increasing crop yields we can reduce the amount of land we use for agriculture.

Detailed explanation-2: -Following the Neolithic or agricultural revolution, the population made its first major leap, reaching over the short span of 8, 000 years around 150 million by the year 1000 bce (2.6 persons per square mile). For the next two and a half thousand years there was relatively little change.

Detailed explanation-3: -Agrochemicals include pesticides and herbicides insecticides, biopesticides, and other agrochemicals compound, which help farmers to control the adverse effects of pests and weeds on crops and increase total yield by inhibiting the growth of weeds around crops and reducing pest attack on the standing crops (Table 2).

Detailed explanation-4: -The theory implies that as population grows, ceteris paribus, land becomes scarce relative to labor. The change in the land to labor ratio causes the price of labor to decrease relative to the price of land. This implies that as RPD grows, competition will increase for land, as well as work off-farm.