Here is a question about this article: The geologic record of the Proterozoic (2,500 to 541 million years ago) is more complete than that for the preceding Archean. In contrast to the deep-water deposits of the Archean, the Proterozoic features many strata that were laid down in extensive shallow epicontinental seas; furthermore, many of these rocks are less metamorphosed than Archean-age ones, and plenty are unaltered. Study of these rocks show that the eon featured massive, rapid continental accretion (unique to the Proterozoic), supercontinent cycles, and wholly modern orogenic activity. Roughly 750 million years ago, the earliest-known supercontinent Rodinia, began to break apart. The continents later recombined to form Pannotia, 600–540 Ma.
What is the answer to this question: What era came before the Proterozoic era?
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So... Archean


Here is a question about this article: The United States Census Bureau estimates that the population of Florida was 20,271,272 on July 1, 2015, a 7.82% increase since the 2010 United States Census. The population of Florida in the 2010 census was 18,801,310. Florida was the seventh fastest-growing state in the U.S. in the 12-month period ending July 1, 2012. In 2010, the center of population of Florida was located between Fort Meade and Frostproof. The center of population has moved less than 5 miles (8 km) to the east and approximately 1 mile (1.6 km) to the north between 1980 and 2010 and has been located in Polk County since the 1960 census. The population exceeded 19.7 million by December 2014, surpassing the population of the state of New York for the first time.
What is the answer to this question: What is the center of the Florida population
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So... Polk County since the 1960 census


Here is a question about this article: The timing of migration seems to be controlled primarily by changes in day length. Migrating birds navigate using celestial cues from the sun and stars, the earth's magnetic field, and probably also mental maps.
What is the answer to this question: How else to migrating birds navigate?
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So...
the earth's magnetic field