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The first simple one-celled organisms that developed during the Precambrian era are called?
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Why is PreCambrian called PreCambrian?
Precambrian is BEFORE the Cambrian period!
Linnaeus developed a system for naming and classifying organisms which is called?
Taxanomy
What are the most common precambrian fossils called?
stromatolites
What is the longest segments of geologic time called?
Precambrian Era.
The largest division of geological time is called?
The Archean Eon, which is part of the Precambrian period along with the Proterozoic Eon.
What are the structures found in the blood called erythrocytes?
many onecelled colonial and simple multicelluar organisms rely on which of the following transport mechanisms
Why is PreCambrian called PreCambrian?
Precambrian is BEFORE the Cambrian period!
What kind of animals developed near the end of first era?
Animals without backbones, called invertebrates, developed near the end of the Precambrian. Imprints of jellyfish and marine worms have been found in late Precambrian rocks. Because invertebrates were soft, they weren't easily preserved as fossils. This is one of the reasons why the Precambrian fossil record is so sparse.
Linnaeus developed a system for naming and classifying organisms which is called?
Taxanomy
What are the most common precambrian fossils called?
stromatolites
What is the longest segments of geologic time called?
Precambrian Era.
What major change occurred in the atmosphere during the precambrian?
The atmosphere, during the Precambrian became richer in oxygen caused by a bacteria called cyanobacteria.
The division of geologic time that makes up about 88 percent of Earth's history is called?
It is called the Precambrian.
What is the layered structures made of calcium carbonate by Precambrian cynobacteria called?
stromatolites
The largest division of geological time is called?
The Archean Eon, which is part of the Precambrian period along with the Proterozoic Eon.
What is the most common precambrian fossil are layered mounds of calcium carbonate called?
stromatolites
What are the 3 long units of time between the precambrian time and present called?
eras.
