3.1 Introduction Lesson 3 Unit B
Completion requirements
Unit B
Module 4 ~ Lesson 3
Evidence for Evolution
By Zak Rogers - Zak Rogers, CC BY 2.5 ca, https://commons.wikimedia.org/w/index.php?curid=39818840
The images to the left are of the Burgess Shale in Yoho National Park. Fossils from over 505 million years ago, during the Cambrian Period can be found here. Darwin's theory of natural selection can explain why some organisms survive and others do not. What proof do you have that natural selection is a usable theory? Fossils, like the ones in the Burgess Shale, can show that organisms have changed over time or have evolved. What other evidence is used by scientists to support and study evolution?
In this lesson you will explore the following essential question:
- What proof is there that present-day species evolved from ancestral forms?