What percentage of all Americans will experience back pain in their future? 20%
40%
80%
100%

Melanocytes and keratinocytes work together in protecting the skin from uv damage when keratinocytes a. provide the melanocyte with a protective shield against abrasion b. maintain the appropriate temperature so the product of the melanocyte will not denature c. maintain the appropriate ph in order for the melanocyte to synthesize melanin granules d. accumulate the melanin granules on their superficial portion, forming a uv-blocking pigment layer

Aresult of not keeping your hands moisturized

Witch behavior is most likely to indicate alcohol abuse?