Scientists Have Been Concerned About a Set of Industrial Chemicals

Multiple Choice

Scientists have been concerned about a set of industrial chemicals called CFC's (chlorofluorocarbons) because they:

A) seep into the groundwater and increase the chances of earthquakes
B) rise into the atmosphere and keep the Earth's heat from escaping
C) rise into the atmosphere and destroy ozone
D) rise into the atmosphere and absorb x-rays from space, which we need down here
E) increase the chances of volcanic eruptions where the Earth's crust is thin