Answer:
Finding replacement chemicals for the air-polluting chlorofluorocarbons used in machines and appliances.
Step-by-step explanation:
Applied research refers to research targeted at solving a specific problem in the society. Simply put, it is a research that focuses on bringing solution to practical problems in the society.
Chloroflourocarbons(CFCs) are known to cause damage to the ozone layer. Hence any research aimed at its substitution is targeted at solving a practical problem in the society hence it is an applied research.