Which of the following explains why some occupational health specialists are very concerned about chemicals in the workplace?

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Of the approximately 2 million known chemicals in existence,less than 0.1% have been adequately studied for their effects on humans.Most chemicals have not been studied epidemiologically to determine the effects of exposure on humans.A variety of chemicals are found in the body tissues of the general population.Daily,low-level doses of chemicals may be below the exposure standards but may still carry a potentially chronic and perhaps cumulative assault on workers' health.Predicting human responses to such exposures is further complicated because several chemicals are often combined to create a new chemical agent.Human effects may be associated with the interaction of these agents rather than with a single chemical.Another concern about occupational exposure to chemicals is reproductive health effects.Not all chemicals are dangerous; however,less than 0.1% of them have been adequately studied for their effects on humans.There is no evidence to support the statement that chemicals are being used when there are other natural substances available.

Which of the Following Explains Why Some Occupational Health Specialists