QUESTION TYPE: Paradox
ANALYSIS: Why do we detect toxaphene, even though it was banned? The paradox could be resolved either by showing a source still exists, or that it can linger for a long time in the environment.
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- CORRECT. This helps explain. The toxaphene in the lake could have been put there before the ban.
- This shows the area is polluted, but it doesn’t explain toxaphene’s presence long after it was banned.
- This would actually eliminate a possible explanation (the toxaphene traveled from an area where it wasn’t banned). This makes its presence harder to explain.
- Nonetheless, the ban occurred. This would only be helpful if there was evidence they decided to disobey the ban they opposed.
- The toxin was detected in the water, not fish. This doesn’t help.
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