Job Outlook. Excellent. Respiratory therapists provide care and treatment for patients suffering from breathing and cardiopulmonary difficulties. They may also provide emergency medical care for patients who have experienced asphyxiation, heart attacks, or shock.
0 is a number alone or not. if you put 0 by itself its both a number and a digit.
Zero in Division of Integers. Since zero has no sign, it has no effect on the sign of the quotient. However, there are important rules to remember whenever zero is in a fraction. If the numerator is zero, the fraction is equal to zero.