Question

the twisting of fiber to make yarn is called
a- roving
b- carding
c- weaving
b- washing​

Answer 1

Spun yarn is made by twisting staple fibres together to make a cohesive thread, or "single." Twisting fibres into yarn in the process called spinning can be dated back to the Upper Paleolithic, and yarn spinning was one of the first processes to be industrialized.

Answer 2

Answer:

Carding

Explanation:

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