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thats thr thing iu doynhrigf
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∙ 10y ago
Julie Meno
Oxygen which helped make air breathable
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Was there oxygen in the atmosphere of early earth?
No! Stromatolites converted the toxic atmosphere into a breathable one.
What process do scientists think provided earth with an oxygen-rich atmosphere?
Scientists believe that stromatolites were responsible for providing an oxygen-rich atmosphere in precambrian times. Stromatolites are structures formed of sediment. The cyanobacteria that formed these structures were photoautotrophs that used sunlight, carbon dioxide and water to produce their food and a byproduct of oxygen.
What was the first organism to add oxygen to the earth?
Cyanobacteria, which are sometimes incorrectly called blue-green algae, were the first organisms to add oxygen to early Earth. Blue-green algae are eukaryotes while cyanobacteria are the much earlier prokaryotes.
Does transpiration add water vapor to the atmosphere?
Yes
What processes add water vapor to the atmosphere?
Screw Your Mom
Was there oxygen in the atmosphere of early earth?
No! Stromatolites converted the toxic atmosphere into a breathable one.
What was the first to live on earth?
The earliest fossils found are of stromatolites from around 3.5 billion years ago. Stromatolites are formed of bacteria that convert carbon dioxide, water and sunlight into calcium carbonate and oxygen. Evidence from trapped bubbles of atmosphere in volcanic rocks shows that the atmosphere 3.5billion years ago was more like Venus today; largely carbon dioxide. Stromatolites thrived in this atmosphere. Ironically, their success caused a major crisis for early life as they removed most of the carbon dioxide from the atmosphere.
What was the first animal to live on Earth?
The earliest fossils found are of stromatolites from around 3.5 billion years ago. Stromatolites are formed of bacteria that convert carbon dioxide, water and sunlight into calcium carbonate and oxygen. Evidence from trapped bubbles of atmosphere in volcanic rocks shows that the atmosphere 3.5billion years ago was more like Venus today; largely carbon dioxide. Stromatolites thrived in this atmosphere. Ironically, their success caused a major crisis for early life as they removed most of the carbon dioxide from the atmosphere.
Which of these was the first source of oxygen in our atmosphere?
They were the oldest organisms called Stromatolites which did not need oxygen themselves but produced it by photosynthesis.
What organisms first introduced oxygen into earth's atmosphere?
Colonies of algae-like single celled organisms called stromatolites
What process do scientists think provided earth with an oxygen-rich atmosphere?
Scientists believe that stromatolites were responsible for providing an oxygen-rich atmosphere in precambrian times. Stromatolites are structures formed of sediment. The cyanobacteria that formed these structures were photoautotrophs that used sunlight, carbon dioxide and water to produce their food and a byproduct of oxygen.
Are stromatolites fossils of early organisms?
That's right; stromatolites are fossils of very old bacterial colonies. Stromatolites are layered accretionary structures formed in shallow water by the trapping, binding and cementation of sedimentary grains by bio-films of microorganisms, especially cyanobacteria (commonly known as blue-green algae). Stromatolites are a major constituent of the fossil record for about the first 3.5 billion years of life on earth and were responsible for creating the atmosphere we breathe.
Where do we get the oxygen from that we breathe in?
The early Earth atmosphere was toxic until the Stromatolites converted it to the nitrogen/oxygen mixture we now have. It is maintained by the trees and algae.
When did Stromatolites become extinct?
The are examples of stromatolites still living. They are not extinct.
What (who)are stromatolites?
The stromatolites are the layered mounds, columns, and the sheet-like sedimentary rocks.
What have scientist inferred from fossil stromatolites?
Stromatolites were much more abundant on the planet in Precambrian times which means that fossils found around stromatolites are typically from the Precambrian era.
What was the first organism to add oxygen to the earth?
Cyanobacteria, which are sometimes incorrectly called blue-green algae, were the first organisms to add oxygen to early Earth. Blue-green algae are eukaryotes while cyanobacteria are the much earlier prokaryotes.
