Why is normal precipitation always slightly acidic?
A) Precipitation dissolved carbon dioxide to form carbomic acid.
B) Nitrogen fixing bacteria form nitric acids which evaporate into the atmosphere.
C) Sulfur dioxide from volcanic explosions combines with water to form sulfuric acid.
D) Chlorine, in the presence of sunlight and hydrogen, is converted to hydrochloric acid.
A
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To promote national security, the U.S. Strategic Petroleum Reserve is increased as necessary to maintain a one-year supply of oil.
Answer the following statement true (T) or false (F)
What may result from crystallization?
A) Sedimentary rock becomes metamorphic rock. B) Sediment becomes sedimentary rock. C) Magma becomes igneous rock. D) Metamorphic rock becomes magma.
Ionic bonds occur when electrons:a
are transferred between atoms. b. are shared by atoms. c. have a neutral charge. d. have a positive charge. e. none of the above
Compared to adults, infants and children are at higher risk for hypothermia for all of the following reasons, EXCEPT:
A. a decreased ability to shiver. B. a relatively small surface area. C. a smaller amount of body fat. D. a smaller overall muscle mass.