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.
2) Zeros to the left of the first nonzero digit are not significant. 0.0002 contains one significant digit. 3) Zeros to the right of a non-zero digit and the decimal point are significant figures. 32.500 g contains five significant digits.