About This Chapter
Living Things in Ecosystems - Chapter Summary
Use this chapter to ensure you fully grasp the basics of living things in ecosystems. Lessons provide in-depth analyses of synergism, coevolution, symbiotic relationships, population growth and much more. Completing them at your own pace will enable you to do the following:
- Define an ecosystem, biotic factor and abiotic factor of an ecosystem
- Differentiate between an environment and ecosystem
- Understand ecosystems, habitats and ecological niches
- Discuss intraspecific and interspecific competition, competitive exclusion and niche differentiation
- Exhibit an understanding of predator/prey interactions, camouflage and mimicry
- Describe natural selection and the adaptation process
- List two types of extinction and discuss ways humans contribute to extinction events
This chapter is completely flexible, enabling you to access all study resources anytime and from any location with an Internet connection. Choose the lessons you want to review based on your desire to refresh or broaden your understanding of living things in ecosystems. At any time, assess your comprehension of the lessons you study by taking their accompanying quizzes. If you develop questions while reviewing this chapter, feel free to send them to our experts.
1. What Is an Ecosystem? - Definition & Explanation
Similar to a car engine that is made up of multiple parts working together, an ecosystem has interacting parts that support a whole. But how do we define an ecosystem and what are the components they consist of?
2. Biotic Factor: Definition & Examples
This lesson focuses on the meaning of the term 'biotic factor.' It also introduces other terminology such as the words 'abiotic' and 'ecosystem'. There are real-world examples embedded in the lesson, and a brief quiz follows.
3. Abiotic Factors of an Ecosystem: Definition & Examples
When it comes to ecosystems, a mountain, a river, and a cloud have more in common than you might think. Abiotic factors have specific and important roles in nature because they help shape and define ecosystems.
4. The Environment, Levels of Ecology and Ecosystems
Do you know the difference between an environment and an ecosystem? In this lesson, you'll find out what makes an environment, and what makes an ecosystem. You'll also learn what ecology is and some of the ways that scientists study ecology using organisms, populations, communities, ecosystems and even the entire biosphere.
5. 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.
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.
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.
8. Predator/Prey Interactions, Camouflage, Mimicry & Warning Coloration
You probably know that skunks can be quite stinky, bees sting and monarch butterflies are pretty, but do you know why? This lesson will introduce you to the reasons why some animals look or act the way they do and how these things relate to the predator/prey relationship.
9. 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.
10. The Limiting Factors of Population Growth
Is it possible for any one population to grow so large it takes over the planet? In this lesson you will learn the answer to that question. You will learn about the limiting factors of population growth and how it controls population numbers.
11. What is Synergism? - Definition & Environmental Science Applications
After reading this lesson, you'll learn about the two different ways in which synergism can work in the natural world. You'll see how it can be both beneficial and harmful depending on the situation.
12. Natural Selection & Adaptation Processes
Through the process of adaptation, natural selection shapes the variety of life that exists around us. This lesson will explore some of the ways this process can take place.
13. Coevolution: Examples & Definition
Can you imagine having a tongue three times the length of your body? There actually exists a moth with such a tongue, and it evolved due to the features of a flower that it feeds on. Learn about this and other examples of organisms that have evolved together.
14. 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.
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Other chapters within the ICSE Environmental Science: Study Guide & Syllabus course
- Environmental Science Overview
- Ecosystem Cycles & Processes
- Kinds of Ecosystems
- Water Resources & Pollution
- Atmosphere, Climate & Air Pollution
- Soil & Land Pollution & Conservation
- Population Growth & Its Impact on Poverty
- Sustainable Agriculture
- Conservation Biology & Protecting Biodiversity
- Energy Use
- Overview of Waste & Waste Management
- Business, Trade & The Environment
- Global Sustainability Efforts
- ICSE Environmental Science Flashcards