A U.S. cap-and-trade (or emissions trading) program was used to reduce emissions of ____.
A. nitrogen oxides (NOx)
B. carbon monoxide (CO)
C. sulfur dioxide (SO2)
D. chlorofluorocarbons (CFCs)
E. lead
Answer: C
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Which of the following best matches the description?Greenhouse gas released into the atmosphere through the use of fertilizers and fossil fuels
A. Greenhouse effect. B. Kyoto Protocol. C. CFCs. D. climate change. E. Carbon dioxide. F. Nitrous oxide. G. greenhouse gases. H. Global warming. I. IPCC. J. Methane.
What mechanisms might explain the warm climate of the Mesozoic Era? How might the equator-to-pole temperature gradient have been reduced?
What will be an ideal response?
An aerosol mixture of particulates and sulfur compounds forms a grayish-colored substance that is called ________
A) photochemical fog B) sulfuric aerosols C) industrial fog D) industrial smog E) inversion smog
Agricultural runoff consists of a mixture of compounds that serve as nutrients. The two primary nutrients are ________ and ________.
A. nitrogen; sulfur B. nitrogen; phosphorus C. nitrogen; oxygen D. nitrogen; carbon