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What was the longest segment of the earth's history?
It was the Precambrian time period.
What happened during the Precambrian time?
Over most of Precambrian time 80 percent of earths history-the only life forms are bacteria ,which appear about 3,500 million years ago. multiple-cells marine animals like spriggina appear at the end of the era
What are the four geologic eras of time and what happened in each of them?
Precambrian Era Paleozoic Era Mesozoic Era Cenozoic Era
What is meant by term Cambrian explosion?
The Cambrian explosion is an apparently sudden increase in fossils marking the separation between Precambrian rocks and Cambrian rocks. At one time this was believed to mark the beginning of multicellular life, but in fact it only marks the evolution of hard body parts (most of which were made of calcium carbonate). It turns out that there were as many multicellular organisms in the late Precambrian as there were during the Cambrian explosion at the beginning of the Cambrian, but the lack of hard body parts in those organisms made the formation of easy to identify fossils of those organisms much rarer.
How frequently does the earthquake occur?
one time a year
Why is the shield also referred to as the Precambrian Shield?
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.
Why is the Canadian Shield also referred as the Precambrian Shield?
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.
Why is the Canadian Shield also referred to as the Precambrian Shield?
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.
Cyanobacteria are as significant to this process today as they were during precambrian time?
hello there
Did plants colonized dry land during the precambrian time?
yes
How many living organisms were alive during the precambrian time?
155.92yrs
What did jellyfish eat during the precambrian time period?
Jellyfish were not even alive during the Precambrian era because only single-celled organisms lived.
What did earth look like during the precambrian time?
It looked like a sphere
When did the ediacaran fauna exist?
The ediacaran fauna lived during Precambrian time and became extinct then, too. Nobody knows for sure why, but trilobites might have caused their disappearance.
Why is it difficult to study Precambrian time?
There is not many remains of the Precambrian time
Were Geologic processes during Precambrian time very different from those of today?
FALSE
What type of organisms dominated life during Precambrian time?
multi-celled organisms
