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Questions and Answers
What is the Geologic Time Scale used for?
What is the Geologic Time Scale used for?
What does an era represent in geologic time?
What does an era represent in geologic time?
What does absolute time mean in the context of geologic time?
What does absolute time mean in the context of geologic time?
What was the significance of the Precambrian era?
What was the significance of the Precambrian era?
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What type of rock is formed when magma from within the earth cools and hardens?
What type of rock is formed when magma from within the earth cools and hardens?
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Which major biological event occurred during the Paleozoic era?
Which major biological event occurred during the Paleozoic era?
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What is the thickness of the Earth's outer core?
What is the thickness of the Earth's outer core?
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What is the composition of the Earth's inner core?
What is the composition of the Earth's inner core?
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During which era did the North America plate move to the west and north?
During which era did the North America plate move to the west and north?
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What is the primary characteristic that distinguishes metamorphic rocks?
What is the primary characteristic that distinguishes metamorphic rocks?
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What major geological event characterized the Cenozoic era?
What major geological event characterized the Cenozoic era?
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What is the primary characteristic of igneous rocks?
What is the primary characteristic of igneous rocks?
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What are rocks?
What are rocks?
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What was the major biological event during the Mesozoic era?
What was the major biological event during the Mesozoic era?
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What does the lithosphere refer to in relation to the Earth?
What does the lithosphere refer to in relation to the Earth?
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What type of rock is formed from sedimentation and compression?
What type of rock is formed from sedimentation and compression?
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