MCQOPTIONS
Saved Bookmarks
| 1. |
Generally speaking, the atmosphere in big cities is polluted most by [BHU 1990; AMU 1991] |
| A. | Radioactive fall out |
| B. | Household waste |
| C. | Automobile exhaust |
| D. | Pesticide residues |
| Answer» D. Pesticide residues | |