The Precambrian eon is separated from the Phanerozoic eon in the fossil record because of poorer record of fossils than that of the succeeding Phanerozoic eon.This is because many Precambrian rocks have been heavily metamorphosed,obscuring their origins,while others have been destroyed by erosion,or remain deeply buried beneath Phanerozoic strata.The Phanerozoic Eon covers 541 years to the present while Precambrian Eon covers 4.6 billion years.
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In this excerpt from the United States Constitution in regards to religion, the meaning is that <em>Citizens cannot be blocked from a political position based on religion</em>. Religious qualifications for public office have always been prohibited by Article VI of the Constitution of the United States, at the national level of the federal system of government.
writings and methods were often adapted to need and circumstance, although there were some steady themes, including antisemitism, anti-communism,
