Respuesta :
Stromatolites is shown as the macroscopic evidence of early life by the artist's reconstruction of the earth 3 billion years ago.
What is Stromatolites?
- Layered sedimentary structures known as stromatolites or stromatoliths are primarily produced by photosynthetic microorganisms.
- Such cyanobacteria, sulfate-reducing bacteria, and pseudomonads.
- Sand and other rocky materials are joined together by these microbe's adhesive molecules to create mineral "microbial mats."
- Stromatolites are some of our earliest examples of life on Earth and are widely distributed in the fossil record.
How was Earth 3 billion years ago?
Without any continents to divide the oceans, Earth may have been entirely submerged in water some 3 billion years ago, resembling a "waterworld."
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