If a trilobite was buried by ocean sediment, it would leave a cavity, or a(n)

What process involves the comparison of rock layers with others in a sequence to determine its age?

Which of the following is the largest division of geologic time?

Erosion is one of the major causes of the missing rock layers, known as

A fossil used to date surrounding rock layers is called a(n)

To determine the most accurate and precise age of Earth's oldest rocks, geologists would use

Which of the following is a trace fossil?

How many years of the history of Earth do geologists study?

Which of the following processes always occurs at a steady rate?

The phrase "younger over older" could be used to remember the principle of

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