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Andrew Sherratt's model of a secondary products revolution involved a widespread and broadly contemporaneous set of innovations in Old World farming.The use of domestic animals for primary carcass products was broadened from the 4th–3rd millennia BCE (c. Middle Chalcolithic) to include exploitation for renewable 'secondary' products: milk, wool, traction (the use of animals to drag ploughs ...
The plastic used in plastic shopping bags also started as a by-product of oil refining. [1] By-products are sometimes called co-products to indicate that although they are secondary, they are desired products. For example, hides and leather may be called co-products of beef production. There is no strict distinction between by-products and co ...
Baking bread is an example of secondary food processing. Secondary food processing is the everyday process of creating food from ingredients that are ready to use. Baking bread , regardless of whether it is made at home, in a small bakery, or in a large factory, is an example of secondary food processing. [ 2 ]
1944 – Green Revolution begins in Mexico; 1974 – China creates the first hybrid rice. [5] See Yuan Longping. 2000 – Genetically modified plants cultivated around the world. 2005 – Lasers used to replace stickers by writing on food to "track and trace" and identify individual pieces of a fresh fruit. [6]
Sherratt's most cited publication was Plough and pastoralism: aspects of the secondary products revolution', published in 1981 in 'Pattern of the Past: Studies in Honour of David Clarke' , the first article in which he described his idea of a secondary products revolution. [citation needed]
Productivity-improving technologies date back to antiquity, with rather slow progress until the late Middle Ages. Important examples of early to medieval European technology include the water wheel, the horse collar, the spinning wheel, the three-field system (after 1500 the four-field system—see crop rotation) and the blast furnace.
For example, if you go to a local credit union and a couple of banks to get a quote for a mortgage, you’re participating in the primary mortgage market. The secondary mortgage market doesn’t ...
Annual Real Gross Domestic Product Growth Rate — 1930 through 2022. Following the end of World War II and the large adjustment as the economy adjusted from wartime to peacetime in 1945, the collection of many economic indicators, such as unemployment and gross domestic product (GDP) became standardized. Expansions after World War II may be ...