Image 1This Australian road sign uses the less common term "stock" for livestock. (from Livestock)

Image 2Agricultural calendar, c. 1470, from a manuscript of Pietro de Crescenzi (from History of agriculture)

Image 3A Fordson Dexta tractor with a rollover protection structure bar retro-fitted. (from Agricultural safety and health)

Image 4Garton's catalogue from 1902 (from Plant breeding)

Image 5 Noria wheels to lift water for irrigation and household use were among the technologies introduced to Europe via Al-Andalus in the medieval Islamic world. (from History of agriculture)

Image 6Chronological dispersal of Austronesian peoples across the Indo-Pacific (from History of agriculture)

Image 7Clay and wood model of a bull cart carrying farm produce in large pots, Mohenjo-daro. The site was abandoned in the 19th century BC. (from History of agriculture)

Image 8Modern facilities in molecular biology are now used in plant breeding. (from Plant breeding)

Image 9Agriculture terraces were (and are) common in the austere, high-elevation environment of the Andes. (from History of agriculture)

Image 10 Jethro Tull's seed drill, invented in 1701 (from History of agriculture)

Image 11Domesticated animals on a Sumerian cylinder seal, 2500 BC (from History of agriculture)

Image 12 Indigenous Australian camp by Skinner Prout, 1876 (from History of agriculture)

Image 13Ancient rice terraces in Yuanyang County, Yunnan (from History of agriculture)

Image 14Agricultural scenes of threshing, a grain store, harvesting with sickles, digging, tree-cutting and ploughing from Ancient Egypt. Tomb of Nakht, 15th century BC. (from History of agriculture)

Image 15Farrowing site in a natural cave in northern Spain (from Livestock)

Image 16 Norman Borlaug, father of the Green Revolution of the 1970s, is credited with saving over a billion people worldwide from starvation. (from History of agriculture)

Image 17Magnified 100X, and stained with H&E (hematoxylin and eosin) staining technique, this light photomicrograph of brain tissue reveals the presence of prominent spongiotic changes in the cortex, and loss of neurons in a case of variant Creutzfeldt-Jakob disease (vCJD). (from Agricultural safety and health)

Image 18 Cattle on a pasture in Austria (from Livestock)

Image 19Livestock production requires large areas of land.

Image 20 Bt-toxins in genetically modified peanut leaves (bottom) protect from damage by corn borers (top). (from History of agriculture)

Image 21 Sumerian harvester's sickle, 3000 BC, made from baked clay (from History of agriculture)

Image 22The creation of maize from teosinte (top), maize-teosinte hybrid (middle), to maize (bottom) (from History of agriculture)

Image 23The Occupational Safety & Health Administration logo. (from Agricultural safety and health)

Image 24Ploughing with a yoke of horned cattle in Ancient Egypt. Painting from the burial chamber of Sennedjem, c. 1200 BC. (from History of agriculture)

Image 25 Pesticide application for chemical control of nematodes in a sunflower planted field. Karaisalı, Adana - Turkey. (from Agricultural safety and health)

Image 26The agriculturalist Charles 'Turnip' Townshend introduced four-field crop rotation and the cultivation of turnips. (from History of agriculture)

Image 27 Wichita village of grass houses surrounded by maize fields in the United States. (from History of agriculture)

Image 28A Northern Song era (960–1127 AD) Chinese watermill for dehusking grain with a horizontal waterwheel (from History of agriculture)

Image 29An organic farmer, California, 1972 (from History of agriculture)

Image 30Biomass distribution of humans, livestock, and other animals (from Livestock)

Image 31In vitro-culture of Vitis (grapevine), Geisenheim Grape Breeding Institute (from Plant breeding)

Image 32The Yecoro wheat (right) cultivar is sensitive to salinity, plants resulting from a hybrid cross with cultivar W4910 (left) show greater tolerance to high salinity (from Plant breeding)

Image 33Agricultural research on potato plants (from Plant breeding)

Image 34 Centres of origin identified by Nikolai Vavilov in the 1930s. Area 3 (grey) is no longer recognised as a centre of origin, and Papua New Guinea (red, 'P') was identified more recently. (from History of agriculture)

Image 35Native millet, Panicum decompositum, was planted and harvested by Indigenous Australians in eastern central Australia. (from History of agriculture)

Image 36An Indian farmer with a rock-weighted scratch plough pulled by two oxen. Similar ploughs were used throughout antiquity. (from History of agriculture)

Image 37Early 20th-century image of a tractor ploughing an alfalfa field (from History of agriculture)

Image 38Pigs being loaded into their transport (from Livestock)

Image 39 Inca farmers using a human-powered foot plough (from History of agriculture)

Image 40Goat family with one-week-old kid (from Livestock)

Image 41 Roman harvesting machine, a vallus, from a Roman wall in Belgium, which was then part of the province of Gallia Belgica (from History of agriculture)

Image 42Global distribution data for cattle, buffaloes, horses, sheep, goats, pigs, chickens and ducks in 2010 (from Livestock)

Image 43 The Harvesters. Pieter Bruegel – 1565 (from History of agriculture)

Image 44Selective breeding enlarged desired traits of the wild cabbage plant ( Brassica oleracea) over hundreds of years, resulting in dozens of today's agricultural crops. Cabbage, kale, broccoli, and cauliflower are all cultivars of this plant. (from Plant breeding)

Image 45Sheep in Écrins National Park (France) (from Livestock)