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Biology, 25.05.2021 22:30 owlgirl554

5. When are blackheads formed? A. when sebaceous glands become clogged
B. when grooves in the epidermis gather dirt
C when hair follicles grow inward rather than
outward
D. when there is an excess of keratin produced

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5. When are blackheads formed? A. when sebaceous glands become clogged
B. when grooves in the...

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