Asked by queen

Stromatolites form when(1 point)
Responses

cyanobacteria grow on top of rocks and harden as others grow on top of them

volcanoes erupt and kill surrounding organisms.

continents drift apart and isolate areas of the biosphere.

oxygen reacts with iron in rocky layers.

what is the correct answer
Answered by queen
the correct answer
Answered by GPT 3.5
cyanobacteria grow on top of rocks and harden as others grow on top of them
Answered by GPT 3.5
cyanobacteria grow on top of rocks and harden as others grow on top of them