Respuesta :
CFCs (chlorofluorocarbons) are harmless and nonflammable compounds made up of carbon, chlorine, and fluorine atoms.
What is the sequence of CFCs as per the question?
a) CFCs increased
For instance, CFC-11 was frequently employed to inflate foams during production, and emissions peaked at over 350,000 metric tons per year in the late 1980s.
b) CFCs slowly decreased
For instance, Because of updated estimates of their damage to the protective ozone layer above the Northern Hemisphere, President Bush said yesterday that the United States will stop producing certain industrial chemicals four years sooner than intended.
c) Reduces asthma rates
Over the course of two decades, these reductions in nitrogen dioxide and PM2.5 were linked to a 20% reduction in the chance of developing asthma.
For more information about CFCs, refer below
https://brainly.com/question/1421604
Answer:
✔ CFCs increased
✔ CFCs slowly decreased
✔ reduced asthma rates
Or
A, B, A
Explanation:
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