About This Chapter
Human Impacts on Earth Systems - Chapter Summary
This chapter offers a well-rounded examination of the impacts humans have on Earth systems. Study these impacts with help from top instructors who have developed informative lessons covering air pollution, deforestation, global warming and more. After completing this chapter, you will be able to:
- Define and list sources and types of air pollution
- Explain the harmful effects of thinning the ozone layer
- List atmospheric causes of global warming and the effect it has on the climate
- Discuss the causes and consequences of deforestation
- Describe how desertification can occur naturally and through human activity
- Detail ways coastal development can have an impact on ecosystems
Enjoy the ability to study the lessons at any pace that suits your schedule and personal preferences. All the lessons are accessible 24/7 via any computer, smartphone or tablet and can be visited as many times as you'd like. The lessons are paired with short quizzes that are designed to check your understanding and retention of lesson concepts. Our practice exam can gauge your overall understanding of human impacts on Earth systems before the day of your test.
1. What Is Air Pollution? - Definition, Sources & Types
In this video lesson, you will learn about the sources and types of air pollution. You will be able to identify the six classes of air pollutants identified by the Environmental Protection Agency and the Clean Air Act of 1970.
2. The Ozone Layer: Importance and the Harmful Effects of Thinning
In this lesson, you will learn the importance of the ozone layer and how it is depleted. You will also study the research and policy that has been instrumental in its recovery.
3. Global Warming: Atmospheric Causes and Effect on Climate
Global warming is a multifaceted, complex issue. It involves both natural and human causes that can increase the amount of greenhouse gases. This lesson looks at some of the facts about global warming and how they could contribute to climate change.
4. Deforestation: Definition, Causes & Consequences
Deforestation is the clearing of trees without the intent of replacing them or reestablishing a stand of trees. Learn reasons for deforestation and discover the consequences of this process in all forests, including tropical forests.
5. Desertification Caused by Human Activity
The earth is constantly changing, and one very dramatic and important change is from fertile land to deserts. This process of desertification can occur naturally, but is often caused or accelerated by human actions. Humans can accelerate this process by overgrazing, poor irrigation techniques, diverting rivers, and deforestation. This large issue is a global problem that must be combated.
6. How Coastal Development Impacts Ecosystems
What are coastal developments? And how do they damage coral reefs? Learn what's happening to the rainforests of the sea, and what scientists are doing to help. Take a quiz and see how much your knowledge has developed.
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Other chapters within the M-STEP Science - Grade 11: Test Prep & Practice course
- Scientific Inquiry & Reflection
- Earth Systems Overview
- Energy & Biochemical Cycles in Earth Systems
- Advanced Rock Cycle
- The Interior of the Earth
- Plate Tectonics Theory
- Earthquakes & Volcanoes Overview
- Hydrogeology Overview
- Oceans & Climate
- Weather and Storms
- The Earth & Sun as a Part of a Galaxy
- Basics of Earth History & Geologic Time
- Climate Change
- Transformation of Matter & Energy in Cells
- Living Organism Composition
- Interdependence of Living Systems & the Environment
- Ecosystems & Populations
- DNA & Mutations
- Mitosis & Meiosis
- Evolution & Biodiversity
- Physics & the Motion of Objects
- The Physics of Forces & Motion
- Forms of Energy
- Basics of Waves
- Light, Electricity & Nuclear Reactions
- Energy Transfer & Conservation
- Properties & States of Matter
- Chemical Changes in Matter