The principal factors in the formation of photochemical smog are high concentrations of nitrogen oxides and
A. reduced precipitation.
B. high levels of carbon monoxide.
C. high relative humidity.
D. strong sunlight.
Answer: D
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Discuss the major earthquake that occurred in Haiti in 2010, including Haiti's proximity to tectonic plates, the damage, and how the poverty of Haiti worsened the effects of this devastating event.
What will be an ideal response?
What technique increases oil and gas production from impermeable source rocks?
A. Hydraulic fracturing B. Hydraulic sorting C. Hydraulic drilling D. Seismic exploration
Of the major fossil fuels used in the world today, which is going to last the longest? (There are at least 300 years left for this energy resource.)
A) coal B) natural gas C) oil D) All of the above are going to last at least 300 years. E) All of the above are likely to be exhausted in the next 20 years.
A U-shaped valley (in cross section) is characteristic of glacial erosion.
Answer the following statement true (T) or false (F)