Civilization began with agriculture, our nomadic ancestors settled once they began to grow their own food.

Agriculture refers to the production of goods through growing of plants, animals and other life forms on land. As of 2006, 45 percent of the world’s population is employed in agriculture.

However, the relative significance of farming has dropped since the beginning of industrialization. Even though agriculture employs one-third of the world’s population, agricultural produce accounts for less than 5 percent of the gross world product.