Answered

Dr. Mario Jose Molina won the Nobel Prize in Chemistry for his work studying which problem?

Athe ozone layer***
Bdeforestation
Cthe El Nino effect
Dthe greenhouse effect

Verified Answer :

Steffanieee

A.
 He was a co-recipient of the 1995 Nobel Prize in Chemistry for his role in elucidating the threat to the Earth's ozone layer of chlorofluorocarbon gases.

A is correct! 
Hope this helps.

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