<meta http-equiv="refresh" content="1; url=/nojavascript/"> The Theory of Evolution | CK-12 Foundation
Skip Navigation

Chapter 10: The Theory of Evolution

Created by: CK-12

The Grand Canyon, shown here, is an American icon and one of the wonders of the natural world. It’s also a record of the past. Look at the rock layers in the picture. If you were to walk down a trail to the bottom of the canyon, with each step down you would be taking a step back in time. That’s because lower layers of rock represent the more distant past. The rock layers and the fossils they contain show the history of Earth and its organisms over a 2-billion-year time span.

Although Charles Darwin never visited the Grand Canyon, he saw rock layers and fossils in other parts of the world. They were one inspiration for his theory of evolution. Darwin’s theory rocked the scientific world. In this chapter, you will read why.

Image copyright Daniel Korzeniewski, 2014. www.shutterstock.com. Used under license from Shutterstock.com.

Chapter Outline

Chapter Summary

Image Attributions

You can only attach files to None which belong to you
If you would like to associate files with this None, please make a copy first.
Please wait...
Please wait...
Image Detail
Sizes: Medium | Original

Original text