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馃敩 Science 15 minLesson 44 of 50
Geological Time and Fossil Records
Read the history of life written in the Earth's rock layers.
What you will learn
- The fossil record provides evidence of evolution and changing environments over time.
- Relative dating uses rock layers to order events from oldest to youngest.
- Radiometric dating allows scientists to determine the precise age of rock samples.
Fossils and rock layers | The geosphere | Middle school Earth and space science | Khan Academy
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Practice sheets
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Recall drill
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4 questions 路 write-in answer lines
Interactive quiz
Question 1 of 1What is the principle of superposition?
