0
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
Wiki User
∙ 8y ago
Add your answer:
Earn +20 pts
Why is PreCambrian called PreCambrian?
Precambrian is BEFORE the Cambrian period!
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.
What landform region is the precambrian age in?
The Precambrian age is in the Canadian Shield region.
What era featured the longest periods with no life forms on Earth.?
Precambrian
Why is the Canadian shield also known as the precambrian shield?
The Canadian Shield was formed in the Precambrian Era. Quite simple actually!
What are the eras in order from youngest to oldest?
precambrian, palezoic, mesozoic, cenozoic
Why is PreCambrian called PreCambrian?
Precambrian is BEFORE the Cambrian period!
When were precambrian rocks formed?
During the precambrian.
What are the divisions of geological time?
These are put in order of older to newer. Precambrian, Paleozoic, Mesozoic, Cenozoic.
Historians know least about era do?
**Precambrian**
What is the mineral composition of precambrian?
The Precambrian is a geological age, not a mineral.
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.
What is the correct order for the major geological eras?
Oldest to youngest*Precambrian Era*Paleozoic*Mesozoic*Cenozoic
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.
Why did precambrian end?
The Precambrian ended about 541 million years ago.
Why is it difficult to study Precambrian time?
There is not many remains of the Precambrian time
