EARTH SCIENCE

Science Bowl Question

📅 NSB Regional 2007🎓 HS🔄 Round 16#️⃣ Question 19❓ TOSS-UP📝 Multiple Choice

Most banded iron formations found today began to form about how many years ago:

W) 2.5 billion years

X) 500 million years

Y) 5 million years

Z) 100,000 years

✔️Answer:W) 2.5 BILLION YEARS

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