MCQOPTIONS
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| 1. |
The bio-gas production is due to : |
| A. | Catalyst reaction of biodegradable material |
| B. | Heat reaction of biodegradable material |
| C. | Fermentation of biodegradable material |
| D. | Photosynthesis of biodegradable material |
| Answer» D. Photosynthesis of biodegradable material | |