Multiply
--9(-10)
A) 90
B) -19
C) -90
D) $\frac { 9 } { 10 }$

question 160

Multiple Choice

Multiply.
--9(-10)

• A) 90
• B) -19
• C) -90
• D) \(\frac { 9 } { 10 }\)

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Definitions:

Melanin

A pigment found in the skin, hair, and eyes that gives them color and offers protection against ultraviolet radiation.

Arrector Pili

Small muscles attached to hair follicles in mammals, contraction of which causes the hair to stand upright, producing goosebumps.

Hair Follicle

The skin organ that produces hair, consisting of a shaft, root, and bulb, and is connected to sebaceous glands.

Sebaceous Gland

Gland of the skin, usually associated with a hair follicle, that produces sebum.