Ethylene oxide is a highly flammable gas used to sterilize medical equipment. To prevent a fire hazard, ethylene oxide should only be used in an area with non-flammable equipment only
without sparks or flames
o without fire extinguishers
O with open windows and doorways,

David, an aspiring baseball player, was struck on the left side of his face with a fastball pitch. he was not wearing a safety helmet. his zygomatic arch was crushed, as well as parts of the temporal bone. following the accident and reconstructive surgery, he noted that his left lower eyelid was still drooping and the corner of his mouth sagged. what nerve damage did he sustain?

An _ exposure is a repeated or prolonged exposure(over months or years) that may bring about slowly developing symptoms.

When is it most common for humans begin to develop a sense of self worth? a. adolescence b. early childhood c. infancy d. late childhood