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Ch 24: FTCE Biology: Ecological Principles & Processes

About This Chapter

This chapter examines the environment, with lessons on ecosystems, populations, the food chain, climate change and more. Prepare for questions on these topics on the FTCE Biology test with our lessons and quizzes.

FTCE Biology: Ecological Principles & Processes - Chapter Summary

Let us help you get ready for FTCE Biology questions on ecological principles and processes. You'll study ecology and ecosystems, food chains, energy flow and population density, among other topics related to the environment. You'll also take a look at lessons on carrying capacity, migration, dispersal and colonization. After completing these lessons, your knowledge should enable you to:

  • Define biodiversity and its relationship to the stability of ecosystems
  • Explain ecological succession from pioneer to climax communities
  • Share how non-native species alter the natural balance
  • Discuss the phosphorus, nitrogen, hydrologic and carbon cycles
  • Differentiate between renewable and non-renewable resources
  • Describe fossil fuels, greenhouse gases and global warming
  • Compare producers, consumers and decomposers in an ecosystem

These lessons give you the knowledge about the environment and its systems that you need for questions on the FTCE Biology test. You'll get a good overview of these topics, and our expert instructors use animations and illustrations to make studying enjoyable.

15 Lessons in Chapter 24: FTCE Biology: Ecological Principles & Processes
Test your knowledge with a 30-question chapter practice test
The Environment, Levels of Ecology and Ecosystems

1. 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.

Food Chains, Trophic Levels and Energy Flow in an Ecosystem

2. 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.

Producers, Consumers & Decomposers in Ecosystems

3. Producers, Consumers & Decomposers in Ecosystems

In this lesson we will learn about producers, consumers, and decomposers. Find out what they are and how they interact with one another in the ecosystem.

Populations: Density, Survivorship and Life Histories

4. Populations: Density, Survivorship and Life Histories

Have you ever wondered how biologists determine the populations of animals in a particular geographic area? Watch this video lesson to find out, and discover how scientists look at the survivorship and life histories of many different species.

Carrying Capacity, Migration & Dispersion

5. Carrying Capacity, Migration & Dispersion

Have you ever wondered why some types of birds fly south in the winter or why some animals form territories? Watch this video to learn about a species' maximum growth capabilities, the way its members group themselves and why they might migrate to new locations every year.

Dispersal, Colonization, and Island Biogeography

6. Dispersal, Colonization, and Island Biogeography

Have you ever gone in your backyard and discovered a wild raspberry bush that has never been there before? How did it get there? Why is there only one bush year after year? In this lesson, you'll study how plant and animal species colonize in new areas through dispersal and immigration and how some species thrive in a new area while others fail.

What is Biodiversity? - Definition and Relation to Ecosystem Stability

7. What is Biodiversity? - Definition and Relation to Ecosystem Stability

Imagine making a list of all of the species you have ever heard of; it would be an enormous list! There are many different species on this planet. This lesson will explore the diversity of species, as well as the different types of diversity and how diversity of life is essential for maintaining healthy ecosystems.

Deforestation, Desertification & Declining Biological Diversity

8. Deforestation, Desertification & Declining Biological Diversity

When trees are lost due to deforestation, the result can be a drier climate and desertification or the transformation of the once fertile land to desert. Learn how deforestation and desertification can lead to a decline in biological diversity.

Ecological Succession: From Pioneer to Climax Communities

9. 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.

How Introduced and Invasive Species Alter Ecological Balance

10. How Introduced and Invasive Species Alter Ecological Balance

What happens to your block when a new neighbor moves in? Something changes, right? Now think about that on an ecological scale: what happens to an environment when a new SPECIES moves in?

Biogeochemical Cycling and the Phosphorus Cycle

11. Biogeochemical Cycling and the Phosphorus Cycle

In this video lesson, we'll take a look at how elements large and small use other elements to grow. This is achieved through cycles. We'll look at macronutrients, trace elements and the biogeochemical and phosphorous cycles.

Cycles of Matter: The Nitrogen Cycle and the Carbon Cycle

12. Cycles of Matter: The Nitrogen Cycle and the Carbon Cycle

Matter is constantly cycled between living and nonliving parts of the environment. Processes like photosynthesis and nitrogen fixation allow the carbon and nitrogen cycles to regenerate needed substances by recycling Earth's atoms.

The Hydrologic Cycle: Definition, Process & Diagram

13. The Hydrologic Cycle: Definition, Process & Diagram

The hydrologic, or water, cycle describes the storage and movement of all water on Earth. This lesson will cover the different reservoirs where water can be stored and how it moves between them.

Renewable & Non-Renewable Resources: Definition & Differences

14. Renewable & Non-Renewable Resources: Definition & Differences

We use a variety of Earth's resources, but not all of them will be around forever. This lesson explains the difference between resources that can be regenerated for our use and those that are gone after they are used once.

Fossil Fuels, Greenhouse Gases, and Global Warming

15. Fossil Fuels, Greenhouse Gases, and Global Warming

In this video lesson, you'll learn what roles fossil fuels and greenhouse gases play in global warming, as well as what life on Earth can expect due to rising carbon dioxide levels within Earth's atmosphere.

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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