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10 June, 23:10

Describe the climate throughout the Paleozoic, Mesozoic, and Cenozoic eras.

Describe two pieces of evidence for scientists' ideas about the age of Earth.

Geologic time periods are divided into segments based on two pieces of information. Describe them.

The upper rocks in the Muav limestone are 505 million years old. The lower rocks in the Redwall limestone are 340 million years old. What could explain the gap?

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  1. 11 June, 00:10
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    The climate of the Paleozoic Era varied as the period began with large glaciers covering the surface of the Earth, which gave way to warmer temperatures, glacial melt and volcanic activity. During the Mesozoic, the Earth was very different than it is now. The climate was warmer, the seasons were very mild, the sea level was higher, and there was no polar ice. The global climate of the early portion of the Cenozoic Period was much warmer than it is today, and the overall climate of the Earth was much more consistent regardless of proximity to the equator.

    Generally speaking, scientists have developed multiple different methods of determining the age of the earth. Two examples are carbon dating rocks and hydrogen dating rocks.

    The first stated that sedimentary rocks are laid down in a horizontal manner, and the second stated that younger rock units were deposited on top of older rock units.

    The earth's climate prevented the formation of new limestones during that gap of time
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