All matter is made of particles called

Isotopes with a _____ half-life are used to date rocks in an absolute manner.

Absolute dating means that scientists are

The fossil record was used to create

The geologic time scale has been finalized and scientists do not change it.

What is biodiversity?

What is genetic diversity?

In what type of rock do fossils form?

Scientists believe that ancient life began

What is a tetrapod?

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