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What are three possible reasons why less is known about the precambrian life form than more recent life?
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∙ 8y ago
Because of radiation, no oxygen, and species were found in the ocean.
Wiki User
∙ 8y ago
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What are three possible reasons why less is known about precambrian life-formes than is known about more recent life?
Because of radiation, no oxygen, and species were found in the ocean.
Name three possible reasons why less is known about Precambrian life-forms than is known about more recent life?
first of all if your asking this question, then your just looking for the answer for your science homework.Look in the book and you'll find the answer.
What are three possible why less is known about Precambrian life-forms than is known about more recent life?
Because of radiation, no oxygen, and species were found in the ocean.
Why is the Canadian shield also known as the precambrian shield?
The Canadian Shield was formed in the Precambrian Era. Quite simple actually!
What is the first 600 million years of the earth known as?
Precambrian
Why precambrian would have been dominant?
Precambrian would have been dominant because there were so many of them. They lived in very large groups in that were known as stromatolites which were reef like in many ways.
Which New York state landscape region contains mostly precambrian bedrock?
The Adirondack Mountains in New York state contain mostly Precambrian bedrock. This region is known for its ancient rocks that date back over a billion years.
When did the Precambrian time begin?
The Precambrian is the informal name for the large expanse of time preceding the current Phanerozoic Eon. It began with the Earth's formation about 4.5 billion years ago and lasted until the advent of multicellular life about 542 million years ago. Overall the planetary environment was drastically different. Life appeared sometime late in the Precambrian, but it is not known when. The Precambrian "supereon" is divided into three eons: the Hadean, Archaean, and Proterozoic. Very little is known about the Precambrian, despite the fact that it comprises nearly 90% of the Earth's history. This is simply because Precambrian rocks are so old, and are either heavily metamorphosed, have been destroyed by erosion, or remain buried deep beneath Phanerozoic strata.
By what other name is Beijing currenty known?
It was known in the recent past as Peking.
How long did the PreCambrian era last?
The Precambrian Era. The name means: "before the Cambrian period." This old, but still common term was originally used to refer to the whole period of earth's history before the formation of the oldest rocks with recognizable fossils in them. In the last few decades, however, geologists have found that there are some hard-to-discern fossils in some Precambrian rocks, so this period is now also known as the Cryptozoic or "obscure life" Eon (from the words "crypt" = "hidden," and "zoon" = "life"). The Precambrian covers almost 90% of the entire history of the Earth. It has been divided into three eras: the Hadean, the Archean and the Proterozoic. Source: Unknown The Precambrian Era comprises all of geologic time prior to 600 million years ago. The Precambrian was originally defined as the era that predated the emergence of life in the Cambrian Period. It is now known, however, that life on Earth began by the early Archean and that fossilized organisms became more and more abundant throughout Precambrian time. The two major subdivisions of the last part of the Precambrian are the Archean (oldest) and the Proterozoic. Rocks younger than 600 Ma are considered part of the Phanerozoic.
Why is it difficult to divide precambrian time into smaller time units?
The Precambrian interval of earth history is difficult to study because of its tremendous age. Many of the original rocks have been destroyed by weathering and erosion, or have been greatly altered by heat & pressure during burial, a process known as metamorphism.
What era was earth first formed Cenozoic Mesozoic Paleozoic or Precambrian PLEASE HELP?
The earth first formed at the beginning of the Precambrian supereon which spans a very large period of time from 4,567 million years ago, through to 542 million years ago.The beginning of the Precambrian where Earth formed is known as the Hadean eon, stretching from 4.7 Ga (billion years ago) and ended roughly 3.8 billion years ago.
