An object with which of the following densities will float on water? A. 11.4g/cm3
B. 1.2g/cm3
C. 3.5g/cm3
D. 0.7g/cm3

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.

its temperature is increasing. this causes molecular vibrations to increase.