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."
The thickness of wool is referred to as its "micron count." This measurement indicates the diameter of the wool fiber, with lower micron counts indicating finer, softer wool.
wool is a natural animal fiber
waves or kinks in a wool fiber
Fleece-bearing animals are the source of wool fibres.
Under a microscope, wool fibers appear to have scales that give them a serrated edge appearance. Wool fibers also have a natural crimp or waviness that contributes to its elasticity and resilience. Additionally, you may see variations in diameter along the length of the fiber, adding to its unique properties.
Wool
yes it is
wool is a fiber and it cannot be digested
Wool is not a synthetic, it is a natural fiber. Wool comes from sheep, making it a protein.
acrylic
No, it's a fiber.