They are most mainly consists of "Keratin"
So, option B is your answer.
Hope this helps!
Answer:
Sterols and phospholipids
Explanation:
C. From what I have read they come from the outdoors.
No, all you need to solve a rubiks cube is patience, common sense, and courage that you know you can do it. anyone can do it!
Answer:
The acronym CPR stands for: cardiopulmonary resuscitation.
So, the correct answer is C.
Let me know if this helps!