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Science Bowl Question

📅 NSB Round Robin 2013🎓 MS🔄 Round 2#️⃣ Question 25❓ TOSS-UP📝 Multiple Choice

Which of the following is an example of abrasion weathering?

W) Loose rocks collide with each other, wearing each other down
X) Oxygen combines with iron to form iron oxide
Y) Water enters the cracks of rocks and freezes, causing the cracks to expand
Z) Hydrogen ions in water replace elements such as potassium or calcium in rocks
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