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About This Drill
ACT Science — Conflicting Viewpoints — Drill 1 is a Science practice drill covering Conflicting Viewpoints. It contains 5 original questions created by Brian Stewart, a Barron's test prep author with over 20 years of tutoring experience.
ACT Conflicting Viewpoints questions present two competing scientific explanations and ask you to analyze each position. In this drill, two scientists debate the primary cause of the Permian-Triassic mass extinction — volcanic activity versus a bolide impact — and you must identify assumptions, find agreements, and evaluate hypothetical evidence.
Questions in This Drill
- According to Scientist 1, what was the primary cause of the Permian-Triassic mass extinction?
- Which of the following statements would both Scientist 1 and Scientist 2 most likely agree with?
- Which of the following findings, if confirmed, would most weaken Scientist 2's hypothesis?
- Scientist 2's argument depends on which of the following assumptions?
- A team of geologists examining deep-sea sediment cores from multiple locations around the world discovers a well-defined iridium anomaly precisely at the Permian-Triassic boundary in each core. This finding would most strongly support the hypothesis of: