题目内容

DDT, a pesticide, was extensively used from the 1940s to 1970s. Choose the statement that best describes why its use has since been restricted in some countries.

A. It was not a very effective pesticide.
B. It breaks down rapidly in the environment.
C. It is acutely toxic to humans in milligram quantities.
D. It was implicated in the decline of the eagle population.

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d) Compared to Scenario B, Scenario A has

A. greater exposure
B. equal exposure
C. less exposure

c) Compared to Scenario B, Scenario A has

A. greater susceptibility
B. equal susceptibility
C. less susceptibility

b) Compared to Scenario B, Scenario A has

A. greater hazard
B. equal hazard
C. less hazard

Use the two scenarios to answer the questionScenario A: A person with celiac disease eats 2 slices of whole wheat bread.Scenario B: A person trying to limit carbohydrates in order to lose weight eats 10 slices of whole wheat bread.Identify the relative risk, hazard, susceptibility and exposure associated with the eating of the whole wheat bread in the two scenarios.a) Compared to Scenario B, Scenario A has

A. greater risk
B. equal risk
C. less risk