The correct answer is they are produced by cyanobacteria.
Stromatolites are being produced by cyanobacteria.
Stromatolites are termed as layered mounds, which have columns and also sheet like rocks which are originally formed with growth of layers.
Lichen stromatolites is a type of stromatolite which is formed by layered structures rocks and they are formed above water.
Educational psychology
please vote my answer brainliest. thanks!
Answer:
The internal and external factors
If i’m correct, they created a new breed of corn that was immune to the fungus
