What safety measures can employers use when workers are on a supported scaffold more than 10 feet above the working surface?

Astudy shows that an influenza vaccine is 71.4% effective in preventing a particular type of influenza. if 15,422 people receive the vaccine, how many would not be protected and would be likely to get infulenza?

Aperson who doesn't have enough calcium in his or her diet is at risk for developing bones that are weak and break easily. this condition is known as  a.  osteoporosis.    b.  crohn's disease.    c.  celiac disease.    d.  hemophilia.

If you feel pain while stretching, you should do any of the following except: a. stretch farther. b. back off the stretch. c. find an alternative. d. stop stretching.