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Science Bowl Question

📅 NSB MS 2007🎓 MS🔄 Round 16#️⃣ Question 13🌟 BONUS📝 Multiple Choice

Which of the following is the name for the last of 4 glacial episodes recognized in North America:

W) the Wisconsinan
X) the Ordovician
Y) the Alaskan
Z) the Nebraskan
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