MCQOPTIONS
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| 1. |
What are the gases called green house gases? |
| A. | CO , O₂ , NO , SMALL |
| B. | CFC , COO , SMALL , FEMALE |
| C. | ONLY , H , CO , SMALL |
| D. | CFC, CO₂, CN₄, NO₂ |
| Answer» E. | |