Module 08 Quiz
1. Most methymercury in lakes arrives via deposition of methymercury from industrial sources T/F
2. Evidence for human health risk assessments come chiefly from:
Studies: Epidemiological, Toxicology, Structure-Activitiy
Studies: Modal analysis, nodal analysis, METALICUS
Testing: Predetermined, cohort, blind
Testing: LD10, LD50 and ED50.
3. Which of these is NOT a part of risk management:
Legal constraints
Funding issues
Risk characterization
Hazard Identification.
4. Some examples of environmental media that might be contaminated and be a transport mechanism:
Air
Water
Sediments
All of these
5. The tributyl tin in Chesapeake Bay waters probably originates from:
Automobiles
Aircraft exhaust
Canvas sails
Antifouling paint
6. PCBs and DDT are relatively quickly degraded by phytoplankton. T/F
7. The RAIS Riskometer regards a skydiving accident as a "voluntary risk." T/F
8. Contrasting human and ecological risk assessments, one difficulty with human health assessments are that there are so many different kinds of people to observe. T/F
9. Which trophic level is most important in most Ecorisk studies?
a. The highest, top feeders
b. The lowest, microorganisms
c. The mid-level are best to observe.
d. All or any may be important, it depends on the contaminant and meso-environment.
10. In the DDT chart, the assessment endpoint was:
a. human health
b. fish-eating birds
c. piscivorous birds
d. b and c, which are synonyms.