Question

multiple choice

1. what does hair density measure?

a) the number of individual hair strands per 1 square centimeter of scalp
b) the number of individual hair strands per 1 square inch of scalp
c) the average number of individual hair strands per 1 square centimeter of scalp, samples taken from four locations on the head
d) the average number of individual hair strands per 1 square inch of scalp, based taken from four locations on the head

1. what is the average hair density?

a) approximately 2,200 hairs per square inch, totaling about 22,000 hairs on the
b) approximately 2,200 hairs per square centimeter, totaling about 22,000 hairs
c) approximately 2,200 hairs per 1 square inch, totaling about 100,000 hairs on
d) approximately 2,200 hairs per 1 square centimeter, totaling about 100,000 hairs

Explanation:

Hair density is defined as the number of individual hair strands per unit area of the scalp. Commonly, it's measured per square - centimeter. The average hair density is around 2,200 hairs per square centimeter, with about 100,000 hairs on the entire head.

Answer:

1. B
2. D