The wool of a vicuna is finer than any other wool. The hair of this animal can be as thin as 0. 000006 meters. If the average thickness of human hair is approximately 8. 4 × 10-5 meters, what is the difference of the thickness of a human hair and a vicuna hair? A. 2. 4 × 10-5 meters B. 2. 4 × 10-6 meters C. 7. 8 × 10-6 meters D. 7. 8 × 10-5 meters.
