Which best explains how the human body obtains energy from food?
a. by inhaling oxygen into the lungs
b. by removing dangerous wastes
c. by exhaling carbon dioxide
d. by breaking chemical bonds?

by breaking and reforming chemical bonds on APEX

a. as the temperature increases, the kinetic energy of the gas molecules increases & the molecules move faster & further away from each other.

b. if you decrease the temperature of a fixed amount of gas at constant pressure, the combined gas law reduces to charles's law. in this case, volume will also decrease.