In South Africa sedimentary rocks of Archean age have been found with rounded pyrite pebbles, which are not found in sedimentary rocks today. What is the most likely reason for this?
W) Pyrite is no longer formed on Earth's surface
X) Liquid water was not present during the Archean
Y) Atmospheric oxygen levels were very low in the Archean
Z) Atmospheric pressure was lower in the Archean
✔️Answer:Y) ATMOSPHERIC OXYGEN LEVELS WERE VERY LOW IN THE ARCHEAN
🚀
Take Your Prep to the Next Level
Practice with interactive modes, adaptive testing, and detailed stats on our main app.