Dr. Mario José Molina won the Nobel Prize in chemistry for his work studying which problem?
(1 point)
Responses
the ozone layer
the ozone layer
deforestation
deforestation
El Niño effect
El Niño effect
the greenhouse effect
(1 point)
Responses
the ozone layer
the ozone layer
deforestation
deforestation
El Niño effect
El Niño effect
the greenhouse effect