Answer:
Substance B is a group of hydroxide ions.
Explanation:
Answer:
Advanced Placement Biology is an Advanced Placement biology course and exam offered by the College Board in the United States.
Explanation:
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Melanin provides pigmentation to the skin and it also provides UV ray protection (which is its role in the epidermis).
The best response by the nurse is, this is the deepest stage of sleep and without it, you will be tired and depressed. In addition, an electroencephalogram or as called as (EEG) is a noninvasive test that registers electrical configurations in the brain. The examination is used to diagnose circumstances such as confiscations, epilepsy, head damages, faintness, headaches, brain tumors and sleeping disorders. It can also be used to settle brain bereavement.
I think the answer would be "A"
