Air pressure in a room is less than that of a basketball since it does not crush the basketball. Think of the crushed can experiment. If you empty a soda can, flip it upside down, put it (carefully)...
Pleural pressure is negative (lower than alveolar pressure or barometric pressure) because of a "suction effect" caused by lung recoil. As the lungs recoil elastically, the inner and outer pleural...
Negative peer pressure would be when people withhold affection or other usual contact because you have done something particularly offensive to the group's view of right and wrong. Answer Negative...