Answer:
Natural protein fibers.
Explanation:
Fibers such as wool, hair,and silk, are made of protein. These are all natural fibers.
<em>Hope this is correct. Wishing you the best.</em>
I believe the blank space is preserved :)
<span>Electrical signals in the body are often based on ions because ions are charged particles</span>
Consuming every subgroup every day is not necessary
Hope this helps!
-Payshence