EARTH SCIENCE
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Science Bowl Question

📅 NSB MS 2007🎓 MS🔄 Round 7#️⃣ Question 17❓ TOSS-UP📝 Multiple Choice

Where does most of Earth's groundwater come from:

W) percolation of seawater into underground aquifers where it undergoes natural desalination
X) precipitation
Y) aquifers that have been there since Earth's origin
Z) glacial melting and runoff
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