The diagram below reminds us that NOx reacts with water to produce nitric acid (HNO3), an important component of
A) global warming.
B) El Niño.
C) eutrophication.
D) acid rain.
D) acid rain.
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Maritime air masses typically form over ____ and have _____ air
A) land; dry B) water; moist C) land; moist D) water; dry
What does the following element description actually mean?
U
A. a uranium atom with 238 neutrons and 92 protons B. a uranium atom with 92 neutrons and 146 protons C. a uranium atom with 92 protons and 146 neutrons D. a uranium atom with 92 neutrons and 238 protons E. none of the above
Which of the following geologic resources was discussed for the area around St. George, Utah?
A. a large cement plant B. an oil field and floodplains with fertile soils C. floodplains with fertile soils D. oil field E. All of these choices are correct.
An example of artificial selection is the
A) breeding of corn from teosinte. B) observation that some snakes retain tiny, incomplete hind legs. C) evolution of antibiotic-resistant bacteria. D) fact that all mammalian limbs are made up of the same set of bones.