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Author Question: Why did virtually all countries in the world agree to ban the use of CFCs by 2020 for developed ... (Read 47 times)

audragclark

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on: Jul 14, 2018
Why did virtually all countries in the world agree to ban the use of CFCs by 2020 for developed countries and by 2030 for developing countries?
 
  A) to prevent acid rain
  B) to reduce global warming
  C) because there are cheaper coolants that work better
  D) because of overwhelming evidence that they destroy the ozone layer
  E) because of overwhelming evidence that they cause smog in cities

Question 2

A gas threatening Earth's ozone layer is
 
  A) sulfur dioxides.
  B) chlorofluorocarbons .
  C) the greenhouse effect.
  D) photochemical smog.
  E) nitrous oxide.


cpetit11

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Reply #1 on: Jul 14, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: B


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