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Science Bowl Question

📅 NSB 2011🎓 HS🔄 Round 6#️⃣ Q24❓ Toss-Up📝 Multiple Choice

Which of the following is an example of effusion?

W) The formation of snowflakes in the upper atmosphere
X) A hot air balloon flight
Y) The evaporation of water from a lake
Z) A bike tire losing air after running over a nail
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