BI CFA: Problems 4-5: Environment & Public Health

A short unit check. Enter your Student ID and answer each item. This is practice, not a grade.

1. 1. In toxicology, the dose-response idea says:

   AA chemical's smell shows how harmful it isBThe harm depends on the chemical, not the amountCThe size of the effect depends on the doseDAny amount of a chemical is equally harmful

2. 2. Two variables rise together over time. The most careful conclusion is:

   AThe trend will continue at the same rateBThey are correlated, but the cause is unknownCOne of them causes the otherDA third factor is causing both of them

3. 3. Incidence counts ____, while prevalence counts ____.

   Aexisting cases at one time; new cases in a periodBnew cases in a period; deaths in that periodCnew cases in a period; existing cases at one timeDpeople at risk; people who recovered

4. 4. A public-health message works best when it is:

   AWritten in the technical terms experts useBPacked with as much detail as possibleCOne version sent out to the whole cityDMatched to the audience's reading level

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