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Correct Answer: C) Coal.
Correct Answer: B) 20, 000.
Correct Answer: D) Persist and continue to destroy ozone for decades.
Correct Answer: D) Acid shock.
Correct Answer: C) CO.
Correct Answer: B) Columbus, Ohio / pH = 4.2.
Correct Answer: C) Urban.
Correct Answer: A) Nitrogen dioxide.
Correct Answer: A) Is a result of off-gassing.
Correct Answer: B) Smog makes it difficult to breath; acid rain wipes out natural habitats.
Correct Answer: B) On sunny, summer days.
Correct Answer: D) All of the above.
Correct Answer: B) Particulates.
Correct Answer: D) Air Pollution.
Correct Answer: A) 6.
Correct Answer: A) 78%.
Correct Answer: A) Humans.
Correct Answer: A) When it is high in the atmosphere blocking UV rays.
Correct Answer: A) Troposphere.
Correct Answer: D) Reduces visibility.
Correct Answer: D) Volatile Organic Compound.
Correct Answer: D) 30.
Correct Answer: D) Restricting industrial production in the city.
Correct Answer: A) Reduce the use of coal.
Correct Answer: A) Air pollution damages crops.