Scientists are working with a liquid that is made of only one type of atom. Which statement correctly describes this liquid? The liquid contains only one compound. The liquid contains only one element. The liquid contains only neutral electrons. The liquid can be broken down into simpler substances.

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.

yes

no

blue is scattered more than other colors because it travels as shorter, smaller waves. this is why we see a blue sky most of the time.