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The exposure component of risk assessment is related to the level of hazard. Some activities - such
as crossing a street- are more common, individualized, and short lived than others. In some cases
the product is highly labile and will not persist in the environment; other products may have a longer
lifespan, resulting in greater probability of larger populations coming in contact with the product. These
parameters define the exposure factor. Exposure factors are based on how often one engages in
the particular activity or comes in contact with a particular product. Central to exposure is
identification of the exposed population. The density and makeup (requires breakdown by age, sex)
of the population must be determined.
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