Ch 4: Evolving Ecosystems: Help and Review

About This Chapter

The Evolving Ecosystems chapter of this Environmental Science Help and Review course is the simplest way to understand evolving ecosystems. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure students learn the essentials of evolving ecosystems.

Who's it for?

Anyone who needs help learning or mastering college environmental science material will benefit from taking this course. You will be able to grasp the subject matter faster, retain critical knowledge longer and earn better grades. You're in the right place if you:

  • Have fallen behind in understanding biomes or the evolution of ecosystems.
  • Need an efficient way to learn about evolving ecosystems.
  • Learn best with engaging auditory and visual tools.
  • Struggle with learning disabilities or learning differences, including autism and ADHD.
  • Experience difficulty understanding your teachers.
  • Missed class time and need to catch up.
  • Can't access extra science learning resources at school.

How it works:

  • Start at the beginning, or identify the topics that you need help with.
  • Watch and learn from fun videos, reviewing as needed.
  • Refer to the video transcripts to reinforce your learning.
  • Test your understanding of each lesson with short quizzes.
  • Submit questions to one of our instructors for personalized support if you need extra help.
  • Verify you're ready by completing the Evolving Ecosystems chapter exam.

Why it works:

  • Study Efficiently: Skip what you know, review what you don't.
  • Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
  • Be Ready on Test Day: Use the Evolving Ecosystems chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any relevant question. They're here to help!
  • Study With Flexibility: Watch videos on any web-ready device.

Students will review:

In this chapter, you'll learn the answers to questions including:

  • What are the different types of biomes?
  • How does primary productivity differ in biomes?
  • How does ecological succession occur in ecosystems?
  • What is the theory of evolution?
  • What are the different types of natural selection?
  • How do adaptation and natural selection occur among species?

12 Lessons in Chapter 4: Evolving Ecosystems: Help and Review
Test your knowledge with a 30-question chapter practice test
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.

Ecological Succession: From Pioneer to Climax Communities

4. Ecological Succession: From Pioneer to Climax Communities

Just as people grow and change so, too, do ecosystems. Watch this lesson to learn about ecological succession from the beginning stages of development to a community's ultimate destination, or climax.

Succession in Freshwater and Terrestrial Ecosystems

5. 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.

Theories of Evolution: Lamarck vs. Darwin

6. Theories of Evolution: Lamarck vs. Darwin

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 & Adaptation: Definition, Theory & Examples

7. Natural Selection & Adaptation: Definition, Theory & Examples

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.

Natural Selection: Definition, Types & Examples

8. Natural Selection: Definition, Types & Examples

We'll take a look at the types of natural selection that can occur. From flying hamsters to moths, you'll start to grasp the different paths organisms can take as they respond to their changing environments over time.

Benthos: Definition, Types & Examples

9. Benthos: Definition, Types & Examples

In bodies of water there exist different levels as you start from the surface and proceed downward. We will be looking into the community in one of the deepest, the benthos community.

Taiga Biome: Animals, Plants, Climate & Locations

10. Taiga Biome: Animals, Plants, Climate & Locations

The taiga biome is an ecosystem specific to the far northern areas of North America, Europe, and Asia. It is characterized by long, cold winters, short, cool summers, and lots of coniferous trees. Learn more about these regions and take a quiz at the end.

Laurentide Ice Sheet: Facts, Collapse & Timeline

11. Laurentide Ice Sheet: Facts, Collapse & Timeline

The Laurentide Ice Sheet was a mass of ice that covered most of Canada and part of the United States over two million years ago. Learn about its physical features and explore how its past decline can help to understand present ice sheets' response to future climate warming.

What is the Canadian Shield? - Definition, Location & Formation

12. What is the Canadian Shield? - Definition, Location & Formation

Half of Canada is covered by an enormous plate of very old stone. In this lesson, we'll discuss the Canadian Shield - what it is, where it's found, and how it was formed.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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