The best method to improve air quality is to _______.
Ause technology to reduce the pollutants in air
Bproduce less pollution
Cproduce less pollution and use technology to reduce the pollutants in air
Dbetter utilize land and technology to prevent pollution
Ause technology to reduce the pollutants in air
Bproduce less pollution
Cproduce less pollution and use technology to reduce the pollutants in air
Dbetter utilize land and technology to prevent pollution