(C) an external cost
(D) a marginal cost
(E) a life cycle cost
- The threshold dose-response model
(A) cannot be used to determine how toxic a substance is
(B) implies a risk associated with all doses
(C) implies that no detectable harmful effects can occur below a certain dose
(D) is similar to a linear dose-response model
(E) All of the above are true.
- Which letter on the graph below represents the optimum level of pollution
balanced with the most efficient use of available resources to control it?
(A) A
(B) B
(C) C
(D) D
