What is the best description of the word drug? -a pill that controls, improves, or cures disease

-the molecular structure of a disease

-a chemical substance that affects the body's function

-a substance that has medicinal properties

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

What is the only part of your body called that should touch the ball when setting in volleyball?

About how many individuals in the us go bankrupt each year due to medical bills?