Identifying missing Parts of speech

Section 1: Foundation Level (Beginner)

The scientist proposed a new to test the ancient hypothesis.
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Global temperatures have been increasing over the past century.
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The evidence from the experiment left no room for doubt.
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Many researchers now for stricter regulations based on these findings.
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The between sleep and memory is well-documented.
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Section 2: Academic Level (Intermediate)

Critics of the policy argue that it may existing social inequalities rather than alleviate them.
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The team's methodology was praised for its rigorous approach to data collection.
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A sudden in market confidence can precipitate an economic downturn.
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The two theories, while seemingly opposed, can be to reveal underlying similarities.
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The phenomenon is not an but a common occurrence in such environments.
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Section 3: Expert Level (Advanced)

The author makes a between the biological and cultural interpretations of the behavior, a dichotomy central to her thesis.
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Proponents of the model that its predictions, though not yet fully tested, are inherently logical.
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The effects of the intervention were negligible, but its long-term impact was profound.
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Species in this niche rapidly when external pressures are removed, often with unforeseen consequences for the ecosystem.
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His analysis was nuanced, avoiding the oversimplified conclusions that plagued earlier studies.
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