Product Description This handy new reference follows the popular Secrets SeriesR question-and-answer format and covers such numerous topics as ozone depletion, global warming, water quality, and hazardous waste. Book Info North Carolina Department of Health and Human Services, Raleigh. Exam review and study guide presents pearls, tips, memory aids, and tables. Question-and-answer format covers what will asked at the workplace, in the clinic, by the public, and on oral exams. Softcover. DNLM: Environmental Health--Examination Questions.