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Ch 27: Intro to the Origin & History of Life On Earth

About This Chapter

Use this engaging chapter on the origins and history of life on Earth to get ready to take an important upcoming exam. We've included a series of short, easy-to-follow video lessons that you can access 24/7 on any mobile device or computer.

Intro to the Origin & History of Life On Earth - Chapter Summary

If you're preparing for an upcoming exam, check out this helpful chapter on the history and origin of life on Earth. You'll watch short videos on theories about the start of life and major eras in Earth's history. Once you complete this chapter, you should be ready to:

  • Define evolutionary change
  • Detail the evolution of prokaryotes
  • Explain the evolution history of protists
  • Identify the characteristics of plants and fungi
  • Discuss the importance of evolution of animals
  • Outline the characteristics of human evolution
  • Provide scientific evidence that supports evolution
  • Define mass extinction

The lessons clearly outline these topics, and you can work through them at your own pace and convenience. Each video is easy to navigate using the timeline feature. We've taken the stress out of studying by providing access to our subject experts if you have any questions.

10 Lessons in Chapter 27: Intro to the Origin & History of Life On Earth
Test your knowledge with a 30-question chapter practice test
The Origin of Life on Earth: Theories and Explanations

1. The Origin of Life on Earth: Theories and Explanations

Ever wonder how living things came from non-living things? We will explore what conditions on early Earth may have created life from non-living items.

The History of Life on Earth: Timeline and Characteristics of Major Eras

2. The History of Life on Earth: Timeline and Characteristics of Major Eras

The Earth is over 4.6 billion years old. Ever wonder what happened during certain time periods in that large amount of time? We will look at the major eons and eras of Earth's history along with important characteristics of each.

Evolutionary Change: Definition and Forms

3. Evolutionary Change: Definition and Forms

You've probably heard of Charles Darwin and evolution. We know that evolution is change over time, but here we will look at how these changes may have occurred during Earth's history.

The Evolution of Prokaryotes: Archaebacteria and Eubacteria

4. The Evolution of Prokaryotes: Archaebacteria and Eubacteria

The first living organisms on Earth were bacteria. These small organisms still exist today and are responsible for many things. In this lesson, we will explore both ancient bacteria and true bacteria.

The Evolution of Protists: Importance & Evolutionary History

5. The Evolution of Protists: Importance & Evolutionary History

Some organisms are very familiar. However, there are some that play vital roles in our lives that we don't even think about. We will look at a group of one of these unfamiliar kingdoms - protists.

The Evolution of Plants and Fungi: Characteristics & Evolutionary History

6. The Evolution of Plants and Fungi: Characteristics & Evolutionary History

In early classification systems, plants and fungi were grouped together. While there are some similarities between these two kingdoms, there are some key differences that we will explore.

The Evolution of Animals: Importance & Evolutionary History

7. The Evolution of Animals: Importance & Evolutionary History

The animal kingdom ranges from simple organisms like sponges to complex organisms like humans. We will look at some defining characteristics of animals as well as examples of both invertebrates and vertebrates.

The Evolution of Humans: Characteristics & Evolutionary History

8. The Evolution of Humans: Characteristics & Evolutionary History

Just like other organisms, humans have changed over time. We will look at the evolution of humans as well as connections with our primate relatives, including Old World and New World primates.

Scientific Evidence That Supports Evolution

9. Scientific Evidence That Supports Evolution

Evolution explains how species that are present on Earth today are modified descendants of their ancestors. This scientific theory is supported by many different types of evidence, which show how evolution is a very real and natural phenomenon.

What Is Extinction? - Defining Background and Mass Extinction

10. What Is Extinction? - Defining Background and Mass Extinction

In this lesson you'll discover what the term 'extinction' means as well as learn the two different types of extinction: mass extinction and background extinction. You will also discover how humans contribute to extinction events.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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