On average, how many acres of land are being converted to urban uses annually in the United States?

Which statement closely describes how much land in the United States has been significantly modified by human activities, including urban or suburban development or agriculture of all forms?

In Arizona, where there are 300 sunny days per year, it requires 335 acres of land to generate 300 MW of average annual power. If there are only 156 sunny days per year in Pennsylvania, how many acres of land would it require to generate the same average annual power? Please round to the nearest acre. Note: assume that a cloudy day delivers 0 watts/acre of solar power. This is not true, but it simplifies the problem for us.

Which of the following is true about urban land use?Urban areas must have at least 5 million people.Urban land does NOT include commercial areas.Urban land may include residential areas.Urban land includes commercial and industrial but not residential.

When approximately did the US urban population become larger than the rural population?

Using the diagram above, at what distance from the central business district will recreational land use begin to outbid all other land uses?