GRE Text Completion Question 1713
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Source: CQ
Because marine algae indirectly remove atmospheric carbon dioxide, a major (i)_____ in marine algae populations might result in (ii)_____ levels of carbon dioxide.
| Blank(i) | Blank(ii) |
|---|---|
| A reduction | D perceptible |
| B transformation | E elevated |
| C explosion | F stabilized |