Chapter 19 BIO notes

Chapter 19 BIO notes - relative system of dating Absolute...

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The fossil record helps us connect life to other life. Paleontology is the study of fossils. Sedimentary rock is the main way fossils are laid down. Individual layers that are formed are called strata. The farther down the layers, the farther back in time you go. **Life originated 3.8 billion years ago.** Geological time scales are created from the study of the strata of sedimentation. This is a
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Unformatted text preview: relative system of dating. Absolute dating, is an accurate telling of the ages of fossils. 87% of the time we have had the earth we have been in the precambian time period. And it would mostly be in the water....
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