When are sperms first produed. a. at birth b. during infancy c. during puberty d. as an adult

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?

How harmful is it to smoke a pack of cigarettes a week?

What is the proper way to determine that someone is unresponsive before administering cpr