The amount of oxygen increased greatly
the amount of oxygen increased greatly
What evidence shows that the Precambrian atmosphere did not contain oxygen?
There is not many remains of the Precambrian time
ANSWER:They produced oxygen
It is hot in the Precambrian time
The Precambrian refers to the 4000 million years leading up to the Cambrian. That is far to vast a period to give you a "climate" answer for. Because the Earth was so much different then (for instance it had no oxygen in its atmosphere, the tides where much bigger (as the moon was closer) and for a period the earth was completely frozen over (snowball Earth).
Precambrian era consist of Haden, Archean and Proterozoic.
Oxygen was released from Precambrian rocks. cynobacteria were the first organisms to produce oxygen 2.5-3 billion years ago
Because it was created in the precambrian era...The Candadian Shield was formed in the Precambrian Era.The rocks of the Canadian Shield formed during the Precambrian time.
The Precambrian Era began in the time period 4600 and ended in 570.
The Precambrian time period is segmented into very few parts because:
The Precambrian Era began 4.6 billion years ago when the Earth was formed.
The Precambrian time accounts for about 88% of Earth's existence.