Earth History

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Which are the remains of species that existed on Earth for relatively short periods of time, were abundant, and were wide spread geographically?

Which is most closely related to the first life forms on Earth?

Which type of map is best used to find the location of a layer of coal at Earth's surface?

Which time period do we live in?

Which can be used to find the absolute age of a fossil?

What information do fossils give geologists?

What is the one giant landmass that was considered a supercontinent?

Which might explain extinctions?