Melanin is a pigment found in your skin and hair cells that gives each its color. ... When sun shines on your skin, it destroys the melanin as well. But since your skin is alive, it can respond to the sun's damage. Your skin cells make more melanin and your skin becomes darker
The site the nurse should prepare is the iliac crest.
Answer: I believe the answer to that would be Heroin.
Explanation: Pure heroin (diacetylmorphine) is a white powder with a bitter taste abused for its euphoric effects. Heroin, a highly addictive drug, is derived from the morphine alkaloid found in opium poppy plant (Papaver somniferum) and is roughly 2 to 3 times more potent than morphine. It is usually injected, smoked or snorted up the nose. It exhibits euphoric ("rush"), anti-anxiety and pain-relieving properties.
Hope I helped you out with your question bud.
Don't hold me to it, but I am pretty sure it is A. critical thinker