The implements used during the glacial age for haircutting and styling were made of: a. oyster shells b. copper c. iron d. ceramic a. oyster shells Your outward appearance and conduct in the workplace projects your professional: a. health b. image c. attitude d. success b. image Bacteria that are harmful microorganisms and can cause disease or infection in humans are: a. parasitic b. pathogenic c. infectious d. nonpathogenic b. pathogenic You can irritate your lungs if you inhale the fumes from: a. bleach b. detergents c. antiseptics d. alcohol a. bleach The study of human body structures and how the body parts are organized is: a. myology b. physiology c. histology d. anatomy d. anatom During the Middle Ages, clergymen wore a distinguishing hair style known as a: a. Tonsure b. Queue