How can temperature affect enzyme reaction rates and why ?

Collisions between molecules increase as the temperature rises. As temperature increases, so does the rate of chemical reaction.

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.