All geologic time prior to the beginning of the paleozoic era is termed the

The geological time before the beginning of the paleozoic is called the Neoproterozoic Era.

The prehistoric era is an era where humans do not know the writings where this era took place before entering the era of history and have not experienced the introduction of letters. Before inhabited by humans, the earth has experienced several changes in terms of climate and surface conditions.

Geology is the study of the earth as a whole based on its composition, structure, history, nature, and formation processes. In the geology era is the geological time which divides eons into smaller parts. Eon Fanerozoikum, which is currently underway is divided into three eras, namely the Paleozoic era, the Mesozoic era, and the Cenozoic era. Each of these eras represents the main stages in the macroscopic fossil record, each separated by a catastrophic extinction.

Before the Phanerozoic eon, there was an eon named Proterozoic which covered three eras between the Paleoproterozoiukum, Mesoproterozoikum, and Neoproterozoikum.

Protozoic is an eon that represents a period before the outbreak of the first complex life on earth. This period lasted from 2500 to 545 million years ago and was part of the Precambrian period. Before the beginning of the Paleozoic era, it was called the Neoproterozoic Era, where it was a geological era that took place between 1000 and 542 million years ago and was the final part of the Proterozoic eon and the Precambrian period. This era is probably one of the eras that have the most interesting geological record because the earth is hit by some of the most severe glaciations that have been known so that the impact of ice sheets can reach the equator.

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Geology

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Class: High School

Subject: Biology

Keyword: Era (geology).

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds