MCQOPTIONS
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MCQOPTIONS
| 1. |
The earliest photo synthesizers used which of the following as the source of hydrogen? |
| A. | CO<sub>2</sub> |
| B. | C<sub>6</sub>H<sub>12</sub>O<sub>6</sub> |
| C. | H<sub>2</sub>O |
| D. | H<sub>2</sub>S |
| Answer» E. | |