Why do most skeletal muscles work in pairs?

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?

Which term defines when one person tries to control another in a relationship? a) dating violenceb) consequencec)limitd) abstinence me plzz : (

Whic component of physical fitness is skill related?