China is the world’s largest producer of Aluminum smelter. Aluminium smelting is the process of extracting aluminium from its oxide, alumina, generally by the Hall-Héroult process.
Bats use SONAR (Sound Navigation & Ranging).Sonar is a technique that uses sound propagation to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels.
An isohyet or an isohyetal line is a line that joins places of same rainfall on a map within a given time period. A map of isohyets is also known as an isohyetal map.
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