Ahuman head hair is best characterized by: a. the absence of a cortex. b. its scale pattern. c. a medulla that is more than 1/2 the overall diameter of the hair shaft. d. a medulla that is absent or is less than 1/3 the overall diameter of the hair shaft.

d. A medulla that is absent or is less than 1/3 the overall diameter of the hair shaft is the correct answer.

Explanation:

Hair consists of two different parts

hair shaft consists:

answer: glucoamylase presented optimum activity at temperature of 55â°c, and, in the glycosidic bonds from the non-reducing ends of starch, resulting in the production of glucose. source and type of fermentation can affect the enzyme's properties

credit to kalahira

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.