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What is the main purpose of the geologic time scale?
What is the main purpose of the geologic time scale?
- To study the movement of tectonic plates
- To measure the age of the Earth in exact years
- To distinguish Earth's history based on life-forms (correct)
- To identify the locations of fossils
What are fossils?
What are fossils?
- Pieces of meteorites found on Earth
- Artifacts left behind by ancient civilizations
- Samples of ancient air trapped in rocks
- Remains or evidence of an organism from the geologic past (correct)
How do geologists establish the existence of Earth's pre-human history?
How do geologists establish the existence of Earth's pre-human history?
- By studying ancient weather patterns
- Through the use of satellite imagery
- By analyzing the composition of modern rocks
- Through the discovery of fossils (correct)
What is the Phanerozoic eon characterized by?
What is the Phanerozoic eon characterized by?
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What is the informal term used to refer to the Hadean, Archean, and Proterozoic eons collectively?
What is the informal term used to refer to the Hadean, Archean, and Proterozoic eons collectively?
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What is the main function of the geologic time scale?
What is the main function of the geologic time scale?
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What characterizes the Phanerozoic eon?
What characterizes the Phanerozoic eon?
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What defines a geologic eon?
What defines a geologic eon?
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What is the informal term used to collectively refer to the Hadean, Archean, and Proterozoic eons?
What is the informal term used to collectively refer to the Hadean, Archean, and Proterozoic eons?
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What are fossils primarily composed of?
What are fossils primarily composed of?
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