science question help

Science
Tutor: None Selected Time limit: 1 Day

3. What is the name of the substance that gives skin and hair its pigment?
4. The muscles found in the front of your thighs are known as what?
Feb 24th, 2015

3

melanin

4

The quadriceps

Feb 24th, 2015

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Feb 24th, 2015
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Feb 24th, 2015
Dec 3rd, 2016
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