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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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snowhite snowhite
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8 years ago
The black part of a blackhead is
A) dirt.
B) excreted carbon.
C) a growing hair stub.
D) oxidized sebum.
Textbook 
Human Anatomy

Human Anatomy


Edition: 7th
Authors:
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WideEyesWideEyes
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8 years ago
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