Safety tips- check weather before going outside, dress and pack accordingly, put on sunscreen to protect the skin.
Fire safety prevention guidelines- install smoke alarms, test alarms every month, talk with family about fire escape plans and practice them, and if it's in your house Get Out, Stay Out , and Call For Help
No, it's because we need to breathe. Your body needs oxygen. Air pressure has little to nothing to do with it as far as I know.
The urethra. According to google, “The urethra is the tube‑like structure that carries urine (pee) out of the body.”