Multiple Choice
What are stromatolites?
A) fossil Nautilus shells formed by deposits of hydroxyapatite
B) FeO in banded iron formations
C) bulbous masses of layered CaCO3 accreted by microbial mats
D) accumulations of fossil trilobites
E) fossils from the Hadean eon
Correct Answer:
Verified
Correct Answer:
Verified
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