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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.
What is the sequence of the eras of the earth's history from the oldest to the most recent?
The sequence of the eras of Earth's history from oldest to most recent is: Precambrian, Paleozoic, Mesozoic, and Cenozoic. The Precambrian era comprises the earliest stages of Earth's formation, followed by the Paleozoic era known for the rise of complex life forms. The Mesozoic era is characterized by the age of dinosaurs, and finally, the Cenozoic era represents the current era with the dominance of mammals.
Why is the Canadian shield also known as the precambrian shield?
The Canadian Shield is known as the Precambrian Shield because it is made up of some of the oldest rock formations on Earth, dating back to the Precambrian Eon. These rocks were largely formed between 4.6 billion to 540 million years ago, before the Paleozoic era began.
What is the Precambrian Era Known for?
The Precambrian Era is known for being the longest geological time period in Earth's history, lasting over 4 billion years. It is characterized by the formation of the Earth, the evolution of the first life forms, and the development of the atmosphere and oceans. Additionally, the Precambrian is marked by the formation of the first continents and the origins of photosynthesis.
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.
What are Precambrian cyanobacteria?
Precambrian cyanobacteria are ancient photosynthetic bacteria that lived during the Precambrian period, around 3.5 billion years ago. They were some of the earliest known forms of life on Earth and played a crucial role in shaping the planet's atmosphere by producing oxygen as a byproduct of photosynthesis.
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.
What are the most common precambrian fossils called?
The most common Precambrian fossils are stromatolites. These are layered structures formed by the growth of cyanobacteria, also known as blue-green algae, in shallow water environments. Stromatolites are important in understanding early life on Earth.
What event marked the end of the Precambrian Era?
The Precambrian Era ended with the beginning of the Cambrian Period, approximately 541 million years ago. This period is characterized by the sudden appearance of a diverse range of complex life forms in the fossil record, known as the "Cambrian explosion".
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.
