3) Where do materials come from? a) From the earth's crust or laboratories. b) From the...

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engineering Mechanical-Engineering

Answer 1

Answer #1

By definition, a material is a substance or mixture of substances that constitute an object.

This can be either naturally obtained or made artificially by humans.

Hence, ALL OF THE ABOVE reasons are the sources of materials. It can be made in the laboratories or formed naturally by enzymatic reactions.

Answer 2

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