When an athlete has a hard hit to the head in a game, but shows no signs of a concussion, why might this be a dangerous situation?

What type of risk factor for underage drinking includes gang presence and income inequality

How does the way a persons brain function affect their mental health?

Which of these statements describes clinical depression? a. a milder form of depression that usually follows a traumatic event b. a medical condition that may occur due to a chemical imbalance in the brain c. alternate feelings of extreme happiness and extreme sadness