What is weather? a: the weight of all the air molecules in the atmosphere pressing down on earth. b: long term patterns in temperature and precipitation. c: physical state of the atmosphere at any given time and place. d: the measure of how quickly molecules are moving.

I believe it is C: Physical state of the atmosphere at any given time and place

c because weather is the state of atmosphere at any given time and place

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.

looks like the answer is     c     to me!