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Samples from the early Precambrian era are rare due to geological processes such as erosion, metamorphism, and plate tectonics that have destroyed or buried the rocks from that time period. Additionally, the rocks from the early Precambrian era are often heavily altered, making it difficult to study and obtain accurate data from them.
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Why are these no samples of rocks from the early Precambrian era?
There are few samples of rocks from the early Precambrian era because much of the Earth's crust from that time has been recycled through processes like plate tectonics, subduction, and metamorphism. Additionally, the rocks that have survived may have been altered or destroyed over time due to extreme heat and pressure. This makes it difficult to find well-preserved samples from this era.
What are two subdivisions of the Precambrian Era called?
The two subdivisions of the Precambrian Era are the Hadean and the Archean Eons.
Did the precambrian era occur first?
Yes. The first era was the precambrian era followed by the paleozoic era then the mesozoic era than the Cenozoic era.
Which era of geologic time spans about 87 percent of Earth's history?
The Precambrian era spans about 87 percent of Earth's history. It includes the Hadean, Archean, and Proterozoic eons and is characterized by the formation of Earth, the development of early life forms, and significant geological events.
Which describes the correct order of the geologic time scale from oldest to most recent?
ok im going to start off by saying this, the last answerer is stupid, and doesnt know what he is talking about. it goes from: PERIOD ERA EPOCH there you go ;)
Why are these no samples of rocks from the early Precambrian era?
There are few samples of rocks from the early Precambrian era because much of the Earth's crust from that time has been recycled through processes like plate tectonics, subduction, and metamorphism. Additionally, the rocks that have survived may have been altered or destroyed over time due to extreme heat and pressure. This makes it difficult to find well-preserved samples from this era.
Early organisms in the Precambrian era converted to oxygen.?
Carbon dioxide
When was the Founding Era?
the Precambrian era
Historians know least about era do?
**Precambrian**
What are the subdivisions of the Precambrian era?
The Precambrian era is divided into three subdivisions: the Hadean, Archean, and Proterozoic eons. These subdivisions represent different stages in Earth's early history, from the formation of the planet to the evolution of complex life forms.
What are two subdivisions of the Precambrian Era called?
The two subdivisions of the Precambrian Era are the Hadean and the Archean Eons.
Early organisms in the Precambrian era converted what to oxygen?
Early organisms in the Precambrian era converted carbon dioxide to oxygen through photosynthesis. This process eventually led to the increase in atmospheric oxygen levels, paving the way for the evolution of more complex life forms.
There was no life on land during this era?
Precambrian Era
Did the precambrian era occur first?
Yes. The first era was the precambrian era followed by the paleozoic era then the mesozoic era than the Cenozoic era.
What are the chracteristics of the geological era and the definition of precambrian Cenozoic mesozoic and paleozoic?
Precambrian
What era featured the longest periods with no life forms on Earth.?
Precambrian
What fossils are from the Precambrian era?
Stromatolites
