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Correct Answer: C) CO.
Correct Answer: C) Construction.
Correct Answer: D) Encourages new factories to be less wasteful.
Correct Answer: C) A photolytic reaction with NOx.
Correct Answer: D) Temperature inversion.
Correct Answer: B) Lowers pH level, making it unhealthy.
Correct Answer: D) Tropospheric ozone.
Correct Answer: A) Use less power (electricity, cars _____ etc).
Correct Answer: C) Start biking more.
Correct Answer: A) Smoke emissions.
Correct Answer: A) When it is in the troposphere.
Correct Answer: A) Particulate Matter.
Correct Answer: D) Ozone.
Correct Answer: B) Breathe.
Correct Answer: C) Discarded rubbish.
Correct Answer: B) To fart.
Correct Answer: C) Decreased pH and less reef building by coral.
Correct Answer: C) The EPA to set national ambient air quality standards for air pollutants.
Correct Answer: C) Air.
Correct Answer: C) 45 percent.
Correct Answer: D) Lead.
Correct Answer: D) Limestone.
Correct Answer: A) Harmful.
Correct Answer: C) Automobile exhaust.