Unlike naturally occurring sources of acid precipitation, anthropogenic sources of acid precipitation
A) are more concentrated in industrial and agricultural areas.
B) result in the extended release of radon gas.
C) include sulfur oxides and nitrogen oxides.
D) occur at higher levels of pH.
A
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Air pollution in China resulted in how many deaths in 2013?
A) 1600 deaths B) 160,000 deaths C) 16,000 deaths D) 1.6 million deaths E) 160 deaths
Why are plutonic rocks often called massive?
A) They often accumulate as successive layers, appearing banded. B) They are covered by the ocean. C) They are very large. D) They rarely accumulate as successive layers and as result look very different from sedimentary rocks.
In the EU, economic conditions have often superseded cultural factors and have dominated the need for __________.
a. none of these is correct b. a Common Market c. a revived Industrial Revolution d. small average family size e. increased integration
The heat that drives the tectonic cycle is derived from
A. nuclear fusion. B. radioactive decay. C. chemical reactions. D. sunlight.