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The Precambrian life forms were less developed than the Paleozoic life forms.

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What is the most significant difference between the precambrian and paleozoic life forms?

The Precambrian life forms were less developed than the Paleozoic life forms.


What was the biggest change in the Earth's atmosphere between the Precambrian and the Paleozoic eras?

The biggest change in the Earth's atmosphere between the Precambrian and Paleozoic eras was the increase in oxygen levels. During the Precambrian, oxygen levels were very low, but during the Paleozoic era, oxygen levels rose significantly due to the evolution of photosynthetic organisms. This increase in oxygen had a significant impact on the evolution and diversification of life on Earth.


What is the most significant difference between Precambrian and Paleozoic life-forms?

The Precambrian life forms were less developed than the Paleozoic life forms. The Precambrian life forms were just starting to develop because this was 544 million years ago. that meant that things still needed to grow. This time didn't last very long though, due to the morphic and erosional processes. The Paleozoic Era began when organisms began developing new hard parts. This made it easier for fossils to be preserved.


What is the Difference between Precambrian rocks and Paleozoic rocks?

Precambrian rocks are older than Paleozoic rocks, dating back to about 4.6 billion to 541 million years ago, while Paleozoic rocks were formed from 541 to 252 million years ago. Precambrian rocks lack fossils, while Paleozoic rocks contain abundant fossil evidence of early marine life. Additionally, Paleozoic rocks mark the beginning of complex life forms, whereas Precambrian rocks mainly consist of simpler organisms.


What was the biggest change in the earths atmosphere between the precambrian and the paleozoic eras?

The origin of free oxygen


Did scientists divide the time between Precambrian time and the present into four units or eras true or false?

False. Scientists divide the time between Precambrian time and the present into three major eras: the Paleozoic, Mesozoic, and Cenozoic eras. The Precambrian itself is a vast time period that precedes these eras and is often subdivided into eons.


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 conspicuous difference is there between precambrian sedimentary rocks and those formed in later eras?

No fossils.


What was the first era in geological time?

The Paleozoic Era was the second in geological time. It was between 541 to 251 million years ago. Phyla, fish, arthropods reptiles and amphibians all evolved during the Paleozoic era. The end of the Paleozoic period ended with the largest mass extinction in history.


What is a major significant difference between the sun and Jupiter?

The difference in mass


What is the most significant difference between biomes?

the climate


How long ago did the 'paleozoic' era begin?

That would be 251 million years ago. The end of the Paleozoic era marks the beginning of the Mesozoic. The last period of the Paleozoic era was the Permian, and the first period of the Mesozoic era was the Triassic; hence the extinction event (the biggest extinction event in the earth's history), the Permian-Triassic extinction, which defines the border between the eras.