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Ch 15: The Origin of Life on Earth

About This Chapter

Watch video lessons to gain an understanding of the various explanations for the origin of life on Earth. Let our instructors guide you through the key concepts and theories examining how life on our planet began.

The Origins of Life on Earth - Chapter Summary

In this chapter, you learn about possible explanations for how living organisms developed on Earth. Our instructors also delve into how life evolved over time and the eventual extinction of species. The lessons in this chapter cover the following topics:

  • Examining theories and explanations for the origin of life on Earth
  • Discussing the timeline and characteristics of the major eras
  • Defining the Endosymbiosis Theory
  • Looking at forms of evolutionary change
  • Discussing extinction, including mass extinction

Our video lessons, taught by subject-matter experts, simplify learning by breaking down complicated concepts into easier to grasp components. Videos include links to text lessons detailing key terms and video transcripts provide you with an additional study aid. When you're ready, take lesson quizzes to test your mastery of the materials taught by our instructors.

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