Login

Ch 15: Changing Ecosystems - Middle School Life Science: Homeschool Curriculum

About This Chapter

The changing ecosystems unit of this Middle School Life Science Homeschool course is designed to help homeschooled students learn about the factors that cause ecosystems to change. Parents can use the short videos to introduce topics, break up lessons and keep students engaged.

Who's it for?

This unit of our Middle School Life Science Homeschool course will benefit any student who is trying to learn about why and how ecosystems are modified. There is no faster or easier way to learn about changing ecosystems. Among those who would benefit are:

  • Students who require an efficient, self-paced course of study to learn about endangered species, extinction, pollution, conservation biology and rainforests.
  • Homeschool parents looking to spend less time preparing lessons and more time teaching.
  • Homeschool parents who need a life science curriculum that appeals to multiple learning types (visual or auditory).
  • Gifted students and students with learning differences.

How it works:

  • Students watch a short, fun video lesson that covers a specific unit topic.
  • Students and parents can refer to the video transcripts to reinforce learning.
  • Short quizzes and a changing ecosystems unit exam confirm understanding or identify any topics that require review.

Changing Ecosystems Unit Objectives:

  • Define species richness and the factors that shape it.
  • Explore how biological diversity shapes the ecosystems of oceans and freshwater.
  • Study the relationship between biological diversity and rainforests and temperate forests.
  • Gain an understanding of desert ecosystems.
  • Compare mass extinction vs. extinction.
  • Study animals on the endangered list and those approaching the endangered status.
  • Discover the link between human pollution and animal endangerment and extinction.
  • Learn how invasive species have threatened ecosystems.
  • Examine how humans have compromised species growth.
  • Review the types of conservation biology.
  • Find out ways to restore ecosystems.
  • Look at the goals and purposes of the World Conservation Strategy and the U.S. Endangered Species Act.
12 Lessons in Chapter 15: Changing Ecosystems - Middle School Life Science: Homeschool Curriculum
Species Richness: Definition & Determining Factors

1. Species Richness: Definition & Determining Factors

In this lesson, you'll learn what species richness is and what factors can influence the index of species richness. You'll also discover why it is an important index to measure in terms of conservation.

Ecosystems of Oceans and Freshwater: Biological Diversity and Water

2. Ecosystems of Oceans and Freshwater: Biological Diversity and Water

In this lesson, you'll learn about the biodiversity of ecosystems based on water. You will discover that marine, freshwater and a mixture of salt and freshwater create very different ecosystems, which in turn influence the amount of biodiversity that is found in these habitats.

Biological Diversity and the Forest: Ecosystems of the Rainforests and Temperate Forests

3. Biological Diversity and the Forest: Ecosystems of the Rainforests and Temperate Forests

In this lesson, you'll learn about three main types of forests found on earth: coniferous, deciduous and tropical rainforests. You'll also discover how the ecosystems where these trees are located affect the biodiversity within them.

Desert Ecosystems: How Biodiversity Impacts Hot and Cold Deserts

4. Desert Ecosystems: How Biodiversity Impacts Hot and Cold Deserts

In this lesson, you'll learn about the biodiversity that makes up a desert ecosystem. You will discover what makes a desert a desert and study the different plant and animal life that inhabit both hot and cold deserts.

What Is Extinction? - Defining Background and Mass Extinction

5. 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.

Differences Between Endangered Species and Threatened Species

6. Differences Between Endangered Species and Threatened Species

In this lesson you'll learn about two terms that describe species with very low population numbers: threatened and endangered. You'll discover why species numbers decline and how we can keep the species that are threatened or endangered from going extinct.

Pollution and Habitat Destruction: The Human Factors Contributing To Endangerment & Extinction

7. Pollution and Habitat Destruction: The Human Factors Contributing To Endangerment & Extinction

In this lesson you will learn about two ways humans contribute to species extinction. We break up habitats by building roads and clearing land, and we pollute both land and water. You will also learn about the specific terms used to describe the processes, habitat fragmentation and anthropogenic pollution.

What Is an Invasive Species? - Definition, List & Effects

8. What Is an Invasive Species? - Definition, List & Effects

This lesson focuses on a group of organisms called invasive species. You'll learn what makes a species invasive and see some examples of invasive species. You'll also discover why invasive species are considered a problem and explore the impacts they have on the environment, the economy and on humans.

Over-Exploitation: How Humans Affect Ecosystems By Decreasing Species Populations

9. Over-Exploitation: How Humans Affect Ecosystems By Decreasing Species Populations

In this lesson, you'll learn how humans overexploit or overharvest species. You will discover the primary way in which humans are responsible for overfishing. You will also learn about how this negatively impacts ecosystems.

What Is Conservation Biology? - Definition & Principles

10. What Is Conservation Biology? - Definition & Principles

Conservation biology aims to reduce the human impact on the environment by looking for the causes and possible solutions to these problems. In this lesson, you'll learn about conservation biology and the different types of conservation.

Ecology Restoration: Foundations, Projects and Goals

11. Ecology Restoration: Foundations, Projects and Goals

In this lesson you will learn how humans have damaged various ecosystems on the planet and how a branch of ecology, restoration ecology, aims to restore these ecosystems. You will discover the main goal of restoration ecology as well as some of the ways habitats are restored.

The Endangered Species Act & The World Conservation Strategy: Goals & Purposes

12. The Endangered Species Act & The World Conservation Strategy: Goals & Purposes

In this lesson, you will learn about the Endangered Species Act, an environmental law that protects endangered species. You will also discover how the ESA works and how species are protected under it. Finally, you will learn how a World Conservation Strategy can help endangered and threatened species worldwide.

Earning College Credit

Did you know… We have over 95 college courses that prepare you to earn credit by exam that is accepted by over 2,000 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? Study.com 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.

Other Chapters

Other chapters within the Middle School Life Science: Homeschool Curriculum course

Support