Stromatolites are rock-like columns composed of layers of fossilized ____.
A) bones and tissue
B) fungi and planets
C) extremophile protists
D) photosynthetic algae
E) single-celled organisms

Question

Quizplus · Accepted Answer

Stromatolites are formed by the layering of sediment trapped by the growth of single-celled organisms, primarily cyanobacteria, which are photosynthetic.

Stromatolites Are Rock-Like Columns Composed of Layers of Fossilized ____