The major risk factor for chronic bronchitis is a. previous allergies. b. cigarette smoking. c. dust in the air. d. family history.

To confirm when to exclude children from school, it's recommended that you refer to guidelines from which of the following organizations? a. national association for child care professionals b. academy of family practices c. american academy of pediatrics d. national association for the education of young children

An is a record that contains a list of qualified workers in an industry.

Bacteria can cause different infections, check all that apply. a. sore throat b. measles c. ear infection d. flu e. cavities