Question

5.12 exam: semester 2 exam which of these actions should they take? a. increase the number of jets flying in the upper troposphere. b. lower allowed concentrations of particulate matter released from factory smokestacks. c. increase funding for coal technology. d. ban the use of chlorofluorocarbons in refrigeration systems.

Explanation:

Chlorofluorocarbons (CFCs) are known to deplete the ozone - layer. Banning their use in refrigeration systems helps protect the ozone layer. Increasing jet flights can release substances that may harm the atmosphere, increasing coal - related funding may lead to more pollution, and reducing particulate matter from smokestacks is more related to air pollution rather than ozone protection.

Answer:

D. Ban the use of chlorofluorocarbons in refrigeration systems.