Ch 6: Ecosystems, Competition & Adaptations

About This Chapter

Take a look at this chapter on competition, adaptations and ecosystems to study for a test or fill in any knowledge gaps. Once you've reviewed these lessons, take the accompanying quizzes to boost your confidence and identify any areas that might need more work.

Ecosystems, Competition & Adaptations - Chapter Summary

Our expert instructors walk you through topics related to adaptations, competition and ecosystems in this engaging chapter. You'll watch short videos on habitats, ecological niches, food chains and interspecific competition, among other topics. After finishing this chapter, you should be able to do the following:

  • Provide examples of symbiotic relationships
  • Outline trophic levels, energy flow and food chains in an ecosystem
  • Detail the climate, plants and animals in an open ocean biome
  • Identify types of forest animals and their habitats
  • Define intraspecific competition and provide examples
  • Discuss competitive exclusion, niche differentiation and interspecific competition
  • Explain adaptations for desert, tropical rainforest and grassland animals

Review the chapter online, or print transcripts and worksheets for offline study. If you'd like to review a portion of a video over again, use the video tabs to quickly navigate to the part you wish to see. You're welcome to reach out to one of our expert instructors through the Dashboard with your questions.

10 Lessons in Chapter 6: Ecosystems, Competition & Adaptations
Test your knowledge with a 30-question chapter practice test
Ecosystems, Habitats and Ecological Niches

1. Ecosystems, Habitats and Ecological Niches

Check out this video lesson to understand the many complex aspects of an ecosystem. See how animals live in habitats and survive amongst their surroundings.

Symbiotic Relationship: Definition & Examples

2. Symbiotic Relationship: Definition & Examples

Symbiotic relationships are a special type of interaction between species. Sometimes beneficial, sometimes harmful, these relationships are essential to many organisms and ecosystems, and they provide a balance that can only be achieved by working together.

Food Chains, Trophic Levels and Energy Flow in an Ecosystem

3. Food Chains, Trophic Levels and Energy Flow in an Ecosystem

In this lesson, you'll learn about food chains, food webs, and the different roles that organisms play in an ecosystem. You'll also learn about how energy flows through an ecosystem.

Open Ocean Biome: Plants, Animals, Climate & Definition

4. Open Ocean Biome: Plants, Animals, Climate & Definition

Seventy-one percent of the surface of our planet is covered by the oceans. It should be no surprise that the open ocean biome is the largest biome on Earth. In this lesson, we will investigate the properties and inhabitants of the open ocean biome.

Animals of the Forest: Types & Habitats

5. Animals of the Forest: Types & Habitats

In this lesson, you'll be learning about animals of the forest. By the end of this lesson, you'll understand which animals and habitats exist in rainforests, temperate forests and the cold taiga.

Intraspecific Competition: Example & Definition

6. Intraspecific Competition: Example & Definition

How do members of the same species share resources? There's an ongoing struggle among individuals of the same species called intraspecific competition, and this competition is one way that nature controls how large a population gets.

Interspecific Competition, Competitive Exclusion & Niche Differentiation

7. Interspecific Competition, Competitive Exclusion & Niche Differentiation

What happens when two similar species that consume the same resources occupy the same space? Interspecific competition, that's what! Watch our video lesson to learn about the outcomes of this ecological battle.

Desert Animal Adaptations

8. Desert Animal Adaptations

Desert animals have adapted to living in an extreme environment (with higher temperatures and dryness) through the use of both physical and behavior specializations. Read this lesson to learn how these specializations help them survive.

Tropical Rainforest Animal Adaptations

9. Tropical Rainforest Animal Adaptations

Tropical rainforests present challenging conditions to the animals that live there. In this lesson, we'll explore several of the diverse adaptations animals have developed in order to survive and thrive in the tropical rainforest.

Grassland Animal Adaptations

10. Grassland Animal Adaptations

Across the planet, there are numerous grasslands, each with its own unique animal inhabitants. How do the animals in these grassland environments survive and adapt? In this lesson, we'll explore grassland animal adaptations, the behavioral and physiological traits that help animals survive.

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

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.