3) The _________ has such a high pressure that metals are unable to melt.
4) The Deccan Plateau is formed of _________.
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Smelting, process by which a metal is obtained, either as the element or as a simple compound, from its ore by heating beyond the melting point, ordinarily in the presence of oxidizing agents, such as air, or reducing agents, such as coke. ... Smelting thus represented a major technological achievement.
Explanation:
lava flows
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