Test What You've Learned (Text Version)

Now we have covered the four primary approaches used to estimate risk: field surveys, categorical rankings, process models, and comparisons of exposure and effects data. Before moving on to the next lesson, try the following multiple-choice quiz to evaluate what you've learned so far.

1. Which risk estimation approach is most appropriate when exposure and effects data are limited or are not easily expressed in quantitative terms?
   • Process models
   • Field surveys
   • Correct answer: categorical rankings
   • Comparisons of exposure and effects data


2. Which method is most appropriate for delineating exposures and effects found in natural systems (as opposed to those found under controlled or prescribed conditions)?
   • Process models
   • Correct answer: field surveys
   • Categorical rankings
   • Comparisons of exposure and effects data


3. Which method(s) can be used to estimate the combined effects of multiple chemical stressors?
   • Categorical rankings
   • Quotient method
   • Process models
   • Correct answer: both the quotient method and process models


4. Which method of comparing exposure and effects data is best for incremental quantification of risks?
   • Quotient method
   • Comparisons incorporating variability
   • Correct answer: comparisons using the entire stressor-response curve
   • None of the above