discuss at least three organizations and/or agencies that are involved with the practice of industrial hygiene, and explain what their involvement entails. At a minimum, discuss the membership or how the agencies came into being and their contribution to the profession or practice of industrial hygiene. Your response must be at least 200 words in length for all essay questions and in APA format. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying citations.