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Gradual thinning and graying of the hair occurs naturally with age. Thinning is caused by , whereas ...

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Gradual thinning and graying of the hair occurs naturally with age. Thinning is caused by , whereas ...

Gradual thinning and graying of the hair occurs naturally with age. Thinning is caused by , whereas graying is caused by .

a. destruction of the germ centers that produce hair follicles; cessation of pigment production
b. cessation of pigment production; destruction of the germ centers that produce hair follicles
c. decrease in epidermal cells; changes in collagen content
d. changes in collagen content; decrease in epidermal cells

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