Changes with Age. In most cases, a person's normal respiratory rate will change with age; younger adults, children, and babies will typically have faster respiratory rates, because as people age, their breathing usually slows down.
Modic changes are pathological changes in the bones of the spine, the vertebrae. These changes are situated in both the body of the vertebrae and in the end plate of the neighboring disc.
While physical changes only involve a change in physical state (i.e. solid to liquid), chemical changes involve the formation of new substances. Chemical changes are associated with chemical reactions that rearrange the atoms to give new combinations of atoms.Chemical changes can result from the combination of different substance through a reaction to give one or more different substances.hemical changes are associated with chemical reactions that rearrange the atoms to give new combinations of atoms. Chemical changes can result from the combination of different substance through a reaction to give one or more different substances.