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Cereals are species of grasses cultivated for their edible grains.
This animation demonstrates the use of modern technology in agriculture.
This animation demonstrates the main sources of soil pollution.
Threshing machines are used for separating grains from straw.
This animation demonstrates different types of soil.
Machines converting the energy of wind into useful forms of power were already in use in the Middle Ages.
The German engineer Rudolf Diesel patented the diesel engine in 1893.
Ancient Indians built huge, naturally ventilated storehouses.
Machines powered by animals were mainly used in mills, for grinding grains.
This animation demonstrates how an escalator works.
Tower cranes are machines used for lifting loads weighing up to several tonnes.
Farming consists of special agricultural activities.