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Questions and Answers
What is the purpose of the Geologic Time Scale?
What is the purpose of the Geologic Time Scale?
Why did scientists turn to rocks to comprehend the full expanse of time?
Why did scientists turn to rocks to comprehend the full expanse of time?
What did Danish scientist Nicolas Steno publish in 1669?
What did Danish scientist Nicolas Steno publish in 1669?
What did geologists use to identify and describe crucial episodes in life’s history?
What did geologists use to identify and describe crucial episodes in life’s history?
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What was the main challenge for humans in comprehending the vast stretches of time covered by the history of life?
What was the main challenge for humans in comprehending the vast stretches of time covered by the history of life?
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What was the significance of the bursts of evolutionary diversity and disastrous extinction events in the history of life on Earth?
What was the significance of the bursts of evolutionary diversity and disastrous extinction events in the history of life on Earth?
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Who argued that the layers closer to the surface must be younger than the layers below them?
Who argued that the layers closer to the surface must be younger than the layers below them?
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In which decade did Giovanni Arduino study the Italian Alps and organize their layers based on their depth and composition?
In which decade did Giovanni Arduino study the Italian Alps and organize their layers based on their depth and composition?
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What did William Smith use to compare rocks from different locations and match their ages?
What did William Smith use to compare rocks from different locations and match their ages?
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What did Italian geologist Giovanni Arduino name the top layers of softer alluvial deposits?
What did Italian geologist Giovanni Arduino name the top layers of softer alluvial deposits?
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What allowed geologists to compare rocks from one location to another and create a universal time scale?
What allowed geologists to compare rocks from one location to another and create a universal time scale?
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What is the name of the system that modern scientists have used to organize Earth's history based on clues from early geologists like Steno, Arduino, and Smith?
What is the name of the system that modern scientists have used to organize Earth's history based on clues from early geologists like Steno, Arduino, and Smith?
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