Choose the correct measurement of a human hair:
A. approximately 80,000 nanometres
B. 50,000 nanometres
C. 8000 nanometres
D. 18,000 nanometres.
Answer:A
Choose the correct measurement of a human hair:
A. approximately 80,000 nanometres B. 50,000 nanometres C. 8000 nanometres D. 18,000 nanometres.