Multiple choice general knowledge science & technology

Blackheads are a buildup of dirt in the pores.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Blackheads are not caused by dirt accumulation. They form when excess oil (sebum) and dead skin cells clog pores, and the dark appearance comes from oxidation of melanin pigment when exposed to air. The dark color is not dirt that can be washed away.

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