I. Skim the text to grasp the general idea, divide the text into paragraphs. Think of the most suitable headings

Dairy products are generally defined as foodstuffs produced from milk. They are usually high- energy-yielding food products. A production plant for such processing is called a dairy or a dairy factory. Raw milk for processing generally comes from cows, but occasionally from other mammals such as goats, sheep, water buffalo, yaks, or horses. Dairy products are commonly found in European, Middle Eastern and Indian cuisine, whereas they are almost unknown in East Asian cuisine. Animal milk is first known to have been used as human food at the beginning of animal domestication milk was first used as human food in the Middle East. Cow's goats and sheep were domesticated in the Middle East between 9000 and 8000 BC. Goats and sheep are ruminants: mammals adapted to survive on a diet of dry grass, a food source otherwise useless to humans, and one that is easily stockpiled. The animals were probably first kept for meat and hides, but dairying proved to be a more efficient way of turning uncultivated grasslands into sustenance; food value of an animal killed for meat can be matched by perhaps one year's worth of milk from the same animal, which will keep producing milk − in convenient daily portions − for years. Around 7000 BC, cattle were being herded in parts of Turkey. There is evidence of milk consumption in the British Isles during the Neolithic period. The use of cheese and butter spread in Europe, parts of Asia and parts of Africa. Domestic cows, which previously existed throughout much of Eurasia, were then introduced to the colonies of Europe during the Age of exploration.