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For _ __ to be effective there must be market like conditions like free and competitive negotiations.

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is urging people to preserve the environment.

Why is exact amount of damage caused by different levels of pollution difficult to measure with certainty?

A. Uncertainty in nature.
B. Uncertainty in human reactions.
C. The instruments used are primitive and unreliable.
Damage can occur in the distant future, difficult to predict with accuracy.

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A marginal damage function shows the change in damages as a result of a unit change in emissions (排放 ) or ambient concentration.

A. 对
B. 错

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A marginal abatement function shows the change in damages as a result of a unit change in emissions (排放 ) or ambient concentration

A. 对
B. 错

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For _______ ________ to be effective there must be market like conditions like free and competitive negotiations.

________ ________is urging people to preserve the environment.

Why is exact amount of damage caused by different levels of pollution difficult to measure with certainty?

A marginal damage function shows the change in damages as a result of a unit change in emissions (排放 ) or ambient concentration.

A marginal abatement function shows the change in damages as a result of a unit change in emissions (排放 ) or ambient concentration

For _ __ to be effective there must be market like conditions like free and competitive negotiations.

is urging people to preserve the environment.