Food (English: food) refers to substances that can meet the normal physiological and biochemical energy needs of the body and prolong normal life. For the human body, substances that can meet the needs of normal life activities and help to prolong life are called food.
Food is usually composed of carbohydrate, fat, protein and water, which can provide nutrition or pleasure for human beings or organisms by eating or drinking. The source of food can be plants, animals or other organisms, such as fungi, or fermented products, such as alcohol. Humans obtain food through gathering, farming, animal husbandry, hunting, fishing and hunting and other different ways.
The emergence of agriculture is the origin of human civilization. Before that, people's food sources depended on hunting and gathering, and their lives depended on how much wild plants and animals provided. As ancestors around the world gradually observed and became familiar with the growth laws of some plants on the basis of collecting economy and long-term living practice, they gradually understood how to cultivate crops.
Due to the differences in economic development in different regions, there are three early agricultural centers in the world, namely, West Asia, East Asia and Central and South America. Zagros Mountain in West Asia, Asia Minor Peninsula in South Asia, Jordan, Palestine and Lebanon along the eastern Mediterranean are all the earliest agricultural cradles in the world.
It is also the origin of barley, wheat and lentils; Around 4500 BC, ancient India began to grow rice; In 7000 BC, beans, gourds and cucumbers were planted in northern Thailand, and Mexico, Peru and Bolivia in Central and South America were the origins of corn, beans and potatoes respectively.