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Author Question: Since the____________________of 1970, emissions of most pollutants have fallen off substantially, ... (Read 86 times)

haleyc112

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on: Jul 13, 2018
Since the________________ ____of 1970, emissions of most pollutants have fallen off substantially, with lead showing the greatest reduction, primarily due to the elimination of leaded gasoline.
  Fill in the blank with correct word.

Question 2

In the 1970s,____________________were the most widely used propellants in spray cans, such as deodorants and hairsprays.
  Fill in the blank with correct word.


blakeserpa

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Reply #1 on: Jul 13, 2018
Answer to Question 1

ANSWER: Clean Air Act

Answer to Question 2

ANSWER: chlorofluorocarbons (CFCs)
CFCs
chlorofluorocarbons


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