Experts recommend having what percent of your pre retirement money to maintain your standard of living

Which of the following is a health risk associated with ground-level ozone? a. cataractsb. skin cancerc. respiratory illnessd. all of the above

Which of the following defines scoliosis? a. a posture disorder characterized by the shoulders being rounded and the back hunched b. a posture disorder in which the spine curves up the back like a snake c. a posture disorder characterized by excessive curvature or arch in the lower back d. none of the above

Astairway has 6 steps. is it a handrail required? a. a handrail is required b. a handrail is not required c. double handrails are required d. only nosing is required