Early humans with less body hair had a survival advantage ov…

Early humans with less body hair had a survival advantage over individuals with hair covering the entire body as less hair allowed them to sweat and hunt for longer periods throughout the day without overheating. Over time, the amount of body hair on humans decreased. What type of natural selection is acting on human body hair during the period described above?   

Same child You are working in the Emergency Department when…

Same child You are working in the Emergency Department when you are notified by EMS that they are in route with a 2 year old who has been pulled from a swimming pool. He is pulseless and apneic. High quality CPR is in progress by a Basic Life Support crew. He arrives in the department. The monitor reveals the following, even though he has no pulses.  The fastest way to gain access for medication administration in a pediatric patient is