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Science Bowl Question

📅 NSB Round Robin 2020🎓 MS🔄 Round 10#️⃣ Question 21🌟 BONUS📝 Multiple Choice

Which of the following scenarios is the LEAST likely to result in allopatric speciation?

W) Two species of wolves living on either side of a now-underwater isthmus
X) Two bird species living on nearby islands formed by rising sea levels
Y) Two species of ground squirrels separated by a large canyon formed by an earthquake
Z) Two species of fish moving back and forth across a tropical reef system
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