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.
Stem-changing verbs in the present tense use the same endings as regular -ar, -er, and -ir verbs when conjugated, but undergo a vowel change in the last syllable of the stem. In this article, we'll take a look at the following present tense stem changes: 1  e > ie changes. 2  o > ue changes. 3  e > i changes. 4  i > ie changes. 5  u > ue changes.