In the above figure, which area is the deadweight loss from a single-price monopoly?

Which of the following are not important areas of remaining scientific uncertainty regarding global climate change?

A) Whether or not greenhouse gases trap heat in the atmosphere. B) Whether or not the planet has warmed on average. C) Whether or not agriculture in the United States will be adversely affected by climate change. D) Whether or not concentrations of carbon dioxide have increased in the atmosphere.

Suppose a monopolist produces output where total revenue is maximized. At that output, the price elasticity of demand for the monopolist's output is:

A. equal to one. B. greater than or equal to one. C. less than one. D. impossible to determine without data.