All fruits that ripen in response to ethene show a characteristic rise in respiratory rate before the ripening phase, called a climacteric.
climacteric fruits, in which a marked rise in respiratory rate accompanies ripening.
A drop in the baby's heart rate or respiratory rate will sound an alarm, and a nurse can stimulate the baby to resume breathing, if necessary.
If pneumonia is present, a rapid rate of respiration may be noted; tachypnea is defined as a respiratory rate over 50 respirations per minute in infants younger than one year.
Older children will have tachypnea if the respiratory rate is greater than 40 per minute.