Answer:
At least three principle methods of desalination exist: thermal, electrical, and pressure. The oldest method, thermal distillation, has been around for thousands of years. In thermal distillation, the water is boiled and then the steam is collected, leaving the salt behind.
Explanation:
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In the stone age people start to carve pictures of animals and plants on the wall, Another answer may be early civilization Where Natives would sculpt and carve statues as idol's
