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An overview of concepts and units. Part 1 Sun and earth: sun; solar radiation; atmosphere; planet Earth; winds; rains; oceans; rivers; Earth's heat; geotectonics; earthquakes; volcanoes; denudation; space encounters. Part 2 Plants and animals: adenosine triphosphate; archaea and bacteria; photosynthesis; C3 and C4 plants; phytoplankton; forests; grasslands; heterotropic metabolism; reproduction; growth; endotherms and ectotherms; food chains; herbivores; carnivores; swimming; running and jumping; flying. Part 3 People and food: basal metabolism; thermoregulation; pregnancy and lactation; human growth; walking and running; labour and leisure; nutrients; grains; bread; lipids and meat; milk; ethanol. Part 4 Preindustrial societies: hunters and gatherers; shifting cultivation; traditional agricultures; cattle; horses; wood, charcoal and straw; waterwheels; windmills; copper, iron and steel; gunpowder; sailships. Part 5 Fossil-fuelled civilization: fossil fuels and electricity; coals; crude oils; natural gases; steam engines; steam turbines; water turbines; fission reactors; transmission; electric motors; lights; internal combustion engines; gas turbines; blast furnaces; aluminium; nitrogen; nuclear weapons. Part 6 Transportation and information: trains; ships; bicycles; cars; airplanes; rockets; pipelines; tankers; telephones; radio and television; computer and microchips.