EARTH SCIENCE
← Back

Science Bowl Question

📅 NSB Round Robin 2008🎓 MS🔄 Round 4#️⃣ Question 24🌟 BONUS📝 Multiple Choice

In what geological period did the first organisms with shells first become abundant:

W) Precambrian
X) Cambrian
Y) Devonian
Z) Permian
🚀

Take Your Prep to the Next Level

Practice with interactive modes, adaptive testing, and detailed stats on our main app.

Launch Interactive Practice