MCQOPTIONS
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| 1. |
Acid rain is caused by release of _____ and ______ into the air.A. Carbon dioxide and carbon monoxideB. Sulphur dioxide and nitrogen oxidesC. Oxygen and water vapourD. Nitrous oxide and ozone |
| A. | C |
| B. | D |
| C. | B |
| D. | A |
| Answer» D. A | |