Depletion of the ozone layer is caused by
a. global warming.
b. natural fluctuations in the climate.
c. fossil fuels.
d. the use of certain chemicals
Question 2
Chlorofluorocarbons (CFCs), which are used in refrigerators, air conditioners, spray cans, and other applications are associated with which of the following environmental problems?
a. Destruction of the ozone layer
b. Desertification
c. Deforestation
d. Environmental injustice