brady138 brady138
  • 04-01-2019
  • Health
contestada

A blackhead is an accumulation of oily material produced by what?

Respuesta :

alleah77
alleah77 alleah77
  • 04-01-2019

The oily material is produced by the sebaceous glands.

The dark black color, however, is not caused by a buildup of dirt, as many people believe. It is actually a build of of excess   melanin that is trapped in  a gland.

Answer Link

Otras preguntas

Does the equation −2x + y = 0 represent a direct variation? If so, identify the constant of variation.
Which of these social thinkers views society as divided into two broad classes of people—the "haves" and the "have-nots"?
If I had a mixture of salt, sand, and iron filings I could separate the mixture by …
The view that human emotions are universal has been supported by the studies of
States in which region receive more of their revenue from the federal government than do most other states? the west the northeast the midwest the south the non
Anna, ben, and cindy have m markers together. anna has a markers, and this is twice as many markers as ben has. how many markers does cindy have?
How does improving technology in primary and secondary sector jobs lead to more workers in the tertiary sector? *Please help asap ;-;
Which of these is an economic goal of united states government policy
Researchers find that there is a significant positive correlation
Why are hairs not a form of positive identification?