MCQOPTIONS
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| 1. |
The correct descending order of the amount of different elements found on the earth's crust is |
| A. | Oxygen, Silicon, Iron, Aluminum |
| B. | Silicon, Oxygen, Aluminum, Iron |
| C. | iron, silicon, oxygen, aluminum |
| D. | Oxygen, Silicon, Aluminum, Iron |
| Answer» E. | |