GRE Text Completion Question 1770
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Source: CQ
For centuries, sailors have reported seeing the surface of the ocean glowing with a uniform milky light, a (i)_____ scientists say may be (ii)_____ by luminescent bacteria.
| Blank(i) | Blank(ii) |
|---|---|
| A phenomenon | D validated |
| B boon | E exacerbated |
| C quandary | F generated |