Ch 4: The Evolution of Ecosystems

About This Chapter

This chapter was designed to help you increase your knowledge on topics on the evolution of ecosystems. You can use the exam found at the end of the chapter to gauge your knowledge of the content you've reviewed.

The Evolution of Ecosystems- Chapter Summary

Take advantage of the video lessons in this chapter to learn about the evolution of ecosystems. Our instructors introduce you to topics such as biomes and the theory of evolution. You can test your level of comprehension by taking our self-assessment quizzes and chapter test. By the time you reach the end of this chapter, you should be familiar with the following:

  • Difference between the desert, tropical rainforest, savanna and coral reefs
  • Significant information about tundra's, taigas, temperate grasslands and coastlines
  • Responsibility of each biome
  • Freshwater and terrestrial ecosystems
  • Evolution theory
  • Theory of natural selection and adaptation

6 Lessons in Chapter 4: The Evolution of Ecosystems
Biomes: Desert, Tropical Rainforest, Savanna, Coral Reefs & More

1. Biomes: Desert, Tropical Rainforest, Savanna, Coral Reefs & More

Take a trip around the world and learn all about different biomes. Why can you only find certain plants and animals in specific places? What are the most fertile climates on Earth? Watch on to answer these and other questions.

Biomes: Tundra, Taiga, Temperate Grassland, and Coastlines

2. Biomes: Tundra, Taiga, Temperate Grassland, and Coastlines

Take a trip with us in this lesson, starting in the Pacific Ocean, traveling across California through the Central Valley and up to the peaks of the Sierra Nevada mountains. We'll learn how oceans, elevation, and people can determine which types of biomes are found in different areas and check out the Earth's most massive and oldest organisms.

Primary Productivity of Biomes

3. Primary Productivity of Biomes

Imagine a desert, a rainforest, and a lake. All of these areas are similar in that there are plants growing in them. These areas all vary because the amount of plant production is different based on the type of habitat. This lesson will explore the concept of primary productivity and how it varies by biomes. It will also discuss the most productive biomes and the biomes that produce the least biomass.

Succession in Freshwater and Terrestrial Ecosystems

4. Succession in Freshwater and Terrestrial Ecosystems

The world's many freshwater and terrestrial ecosystems are constantly changing. This lesson will discuss how these ecosystems change over time and how they recover after disturbances occur.

Theory of Evolution

5. Theory of Evolution

We'll look at the interplay between population genetics and environment. Are traits individually acquired or do entire populations evolve? The flying hamsters and a few other notable experiments will provide the answers.

Natural Selection and Adaptation

6. Natural Selection and Adaptation

How does natural selection help shape the amazing types of animals we witness around us? In this lesson, we'll explore adaptations and what they can tell us about a species' past evolution.

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