What is the study of abnormal behavior called?

What kind of wound occurred when the skin scrapes against a hard surface and tiny blood vessels break in the outer layer of skin

For several reasons you should only use hospital approved hand lotion two of the reasons are because they cause breakdown of latex gloves and can become contaminated with bacteria if dispensers are refilled what is another reason

Which of these are fast-acting compounds that attack ocygen-dependent tissues known to be particularly sensitive to these compounds? a. nerveb. vesicantsc. cyanide compoundsd. pulmonary