Stromatolites are layered structures produced by the activity of
A) dinosaurs.
B) methanogens.
C) cyanobacteria.
D) green algae.

Question

Stromatolites are layered structures produced by the activity of 
A) dinosaurs. 
B) methanogens. 
C) cyanobacteria. 
D) green algae.

Quizplus · Accepted Answer

Stromatolites are layered structures produced by the activity of cyanobacteria, also known as blue-green algae, over millions of years. These microbes trap and bind sediment and minerals, forming distinct layers over time. They are important because they can provide insights into the evolution of life on Earth and help us understand ancient environments. The other choices, dinosaurs, methanogens, and green algae, are not involved in the formation of stromatolites.

Stromatolites Are Layered Structures Produced by the Activity of