Answer: The process of making yarn from fibres is called spinning. In this process fibres from a mass of cotton wool are drawn out and twisted. By this fibres come together to form a yarn.
Explanation:
<span>C.) A by-product of photosynthesis is carbon dioxide. This Is the correct answer. A by-Product of Photosynthesis Is Oxygen.</span>
It is used in measuring the humidity in the air or in gas