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What is the geolgic significance of banded iron fomation?
It was laid down when earths oceans first acquired oxygen in the Precambrian
What is precambrian order?
85% of earths history and the earliest era that exists. bacteria mostly survived then and built up oxygen until a mass extinction.The. Era had many extinctions because of large variations in climate is what mesozoicor cenozoic or precambrian which one
Early organisms in the Precambrian era converted to oxygen.?
Carbon dioxide
Oxygen combined with one other element is an?
Oxygen combined with one other element is an oxide.
What is the name of the element that is combined with alumiium in al2o3?
The element combined with aluminum in Al2O3 is oxygen.
What gas was lacking from earths early atmosphere in the early precambrian?
oxygen
According to the precambrian rock record much of earth's first free oxygen combined with what?
According to the Precambrian rock record, much of Earth's first free oxygen combined with iron to form iron oxide minerals, which settled to the ocean floor as banded iron formations. This process occurred around 2.4 billion years ago during the Great Oxidation Event.
What was the biggest change in the earths atmosphere between the precambrian and the paleozoic eras?
The origin of free oxygen
According to the precambrian rock record much of earths first free oxygen combined with?
Earth was formed somehwat less than 4.6 billion years ago. The Cambrian Era begins around 542 million years ago. Subtracting these times provides for a PreCambrian Era of around 4 billion years in length. This time period makes up around 87% of Earth's total history.
What is the geolgic significance of banded iron fomation?
It was laid down when earths oceans first acquired oxygen in the Precambrian
How has the earths atmosphere changed during the Precambrian time?
During the Precambrian time, the Earth's atmosphere lacked free oxygen, and the early atmosphere was likely composed of gases such as methane, ammonia, and carbon dioxide. Throughout the Precambrian, there were significant changes in atmospheric composition due to volcanic activity and the evolution of photosynthetic organisms that contributed oxygen to the atmosphere.
What is precambrian order?
85% of earths history and the earliest era that exists. bacteria mostly survived then and built up oxygen until a mass extinction.The. Era had many extinctions because of large variations in climate is what mesozoicor cenozoic or precambrian which one
What did Precambrian do?
ANSWER:They produced oxygen
What two gases probably dominated Precambrian Earths atmosphere?
The two gases that probably dominated Earth's atmosphere during the Precambrian era were carbon dioxide (CO2) and nitrogen (N2). These gases were likely present in much higher concentrations than oxygen.
What is earths Precambrian atmosphere?
The Earth's Precambrian atmosphere was primarily composed of carbon dioxide, methane, ammonia, and water vapor. It lacked oxygen and had higher levels of greenhouse gases compared to the present atmosphere. This environment supported the evolution of early life forms such as bacteria and algae.
How did earths atmosphere change during precambrian time?
During the Precambrian time, the Earth's atmosphere underwent significant changes, transitioning from a reducing atmosphere dominated by gases like methane and ammonia to an oxidizing atmosphere with increasing levels of oxygen, due to the development of photosynthetic organisms. This increase in oxygen levels laid the foundation for the evolution of complex multicellular life forms.
Which gas did volcanoes not produce in the Precambrian era?
Oxygen
