Coal-fired power plants convert chemical energy to kinetic energy to mechanical energy to electrical energy. answer true false

of those who start drinking before they're 15 will develop alcohol dependence

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.