EARTH AND SPACE
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Science Bowl Question

📅 NSB Round Robin 2013🎓 MS🔄 Round 9#️⃣ Question 11🌟 BONUS📝 Multiple Choice

Which of the following is NOT thought to have initiated the Permian-Triassic mass extinction?

W) Changing climate
X) Mass volcanism
Y) Meteor impact
Z) Disease
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