Precambrian time, period of time extending from about 4.6 billion years ago (the point at which Earth began to form) to the beginning of the Cambrian Period, 541 million years ago. Precambrian time encompasses the Archean and Proterozoic eons, which are formal geologic intervals that lasted from 4 billion to about 541 million years ago, and the Hadean Eon, which is an informal interval spanning from 4.6 billion to 4 billion years ago. The Precambrian represents more than 80 percent of the total geologic record.
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Answer:two sentences, describe how President Roosevelt portrays Nazi Germany and its allies, the Axis powers, in his speech. ... In this excerpt, Roosevelt is speaking out against the evils of . dictatorships. Roosevelt states that the beliefs of the Axis powers are in direct opposition to the beliefs of
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