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Science Bowl Question

📅 NSB 2011 Set 4🎓 HS🔄 Round 13#️⃣ Question 15🌟 Bonus📝 Multiple Choice

Which of these is NOT true about ultramafic rock?

W) The Earth's mantle is composed of ultramafic rock
X) Ultramafic rocks are usually dark colored
Y) Ultramafic rock crystallizes at higher temperatures than felsic rock
Z) Andesite is a type of ultramafic rock
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