Why does air enter the lungs during inhalation?

How do your peer relationships affect your overall health status? what can you do to improve your peer relationships?

True or false a fertilized cell divides many times to form an embryo

Many1. why should teens be aware of health issues such as healthy sexuality, dealing with conflict, healthy decision making and cpr? 2. a) what are the 3 most important aspects/skills to learn in order to play volleyball activity well? b) explain how each aspect/skill is important when playing the game. c) describe 2 points of strategy you could use to you be successful at this activity.