Probably, you can measure the diameter of a wool fibre and get the answer you want.
From Wikipedia, below: "The quality of wool is determined by its fiber diameter, crimp, yield, color, and staple strength. Fiber diameter is the single most important wool characteristic determining quality and price."
wool is a natural animal fiber
waves or kinks in a wool fiber
Fleece-bearing animals are the source of wool fibres.
Wool
yes it is
wool is a fiber and it cannot be digested
wool is tipically thicker whereas silk has more flow. wool breathe better and does not clings. silk clings
Wool is not a synthetic, it is a natural fiber. Wool comes from sheep, making it a protein.
acrylic
No, it's a fiber.
yes it is