1. Define exposure assessment, and describe the seven steps involved in an exposure-assessment strategy. Apply each step to a scenario where you, as an industrial hygienist, are asked to describe a workers exposure to cadmium during a brazing operation.Your response should be at least 200 words in length. 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.2. What are the elements of the risk-assessment paradigm? How can these elements be applied in a workplace setting in which an emergency responder is addressing a large spill of trichloroethylene? Describe how risk assessment can be used in industrial hygiene practice.Your response should be at least 200 words in length. 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.3. In your own words, define risk. What are the four functions of risk? How can these four functions be used to make risk decisions? List the factors that affect risk perception in the workplace. How can an industrial hygienist determine how much risk is acceptable?