In the long run, most economists agree that a permanent increase in government
spending leads to
A) no decrease in private spending.
B) a decrease in private spending by less than the amount that government spending
increased.
C) a decrease in private spending by the same amount that government spending
increased.
D) a decrease in private spending by more than the amount that government spending
increased.
Global warming refers to the effect of global pollutants such as carbon dioxide on
climates on the earth. Climate-induced changes in temperatures affect, among other
things, agriculture. Which of the following is a reason why policymakers are still
debating if this problem should be addressed and how it should be addressed?
A) Scientists agree about the damage caused by carbon emissions but disagree about the
methods of reducing emissions.
B) The marginal cost of reducing carbon emissions is known with certainly but the
marginal benefit from reduction is not known with certainty.
C) The marginal cost of reducing carbon emissions is not known with certainly but the
marginal benefit from reduction is known with certainty.
D) There is much disagreement about all aspects of the problem: how much carbon
emissions contribute to damage from climate change which in turn informs the benefits
from reduction, and what methods to use which in turn determines the cost of reduction.