About This Chapter
Human Effects on the Environment - Chapter Summary and Learning Objectives
Take a look at the impact that humans have on the environment with the lessons in this chapter. You'll learn about acid rain, carbon storage and greenhouse gases. Then, examine the thinning of the ozone layer and the role humans play in animal extinction. Professional instructors provide video lessons on pollution, deforestation and water pollution. At the end of this chapter you'll be familiar with:
- The nitrogen cycle
- The carbon cycle
- Sources and types of pollution
- Habitat destruction
|The Nitrogen Cycle, Acid Rain and Fossil Fuels||Discusses nitrogen fixation and nitrification. Uses examples to explain the nitrogen cycle and defines eutrophication.|
|The Carbon Cycle and Long-Term Carbon Storage||Details the functions of the carbon cycle and discusses photosynthesis and cellular respiration.|
|Fossil Fuels, Greenhouse Gases, and Global Warming||Examines the impact humans have on the carbon cycle. Uses graphs to explain how global warming occurs. Discusses potential outcomes from a warmer planet.|
|Pollution: Physical, Chemical & Biological||Defines pollution and lists the various types. Explains how each type occurs and provides examples.|
|Water Pollution: Definition, Types, and Sources||Identifies point sources and non-point sources of pollution. Examines surface water and groundwater pollution.|
|What Is Air Pollution? - Definition, Sources & Types||Discusses sources of air pollution and introduces the six most harmful air pollutants. Lists health issues associated with air pollution.|
|The Ozone Layer: Importance and the Harmful Effects of Thinning||Describes the benefits of ozone and the ozone layer. Provides a historical account of how damage to the ozone layer was discovered.|
|Pollution and Habitat Destruction: The Human Factors Contributing To Endangerment & Extinction||Describes the connection between human activity and species extinction. Examines habitat fragmentation, anthropogenic pollution and prevention methods.|
|Deforestation, Desertification & Declining Biological Diversity||Defines these terms and identifies the ways that desertification and deforestation contribute to a decline in biological diversity.|
|Over-Exploitation: How Humans Affect Ecosystems By Decreasing Species Populations||Explains how over-harvesting occurs. Uses overfishing as an example to detail the effects on the ecosystem caused by this practice.|
1. The Nitrogen Cycle, Acid Rain and Fossil Fuels
Do you know the difference between nitrite and nitrate? Do you have any clue how all the nitrogen in the atmosphere becomes usable? If you can't answer these questions, then you need to watch this lesson on the nitrogen cycle.
2. The Carbon Cycle and Long-Term Carbon Storage
All living organisms have a role in the carbon cycle. Do you know you understand how humans, animals and plants use carbon? This lesson will introduce you to the carbon cycle and explain how it functions on a global scale.
3. 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.
4. Pollution: Physical, Chemical & Biological
Pollution is the presence of unwanted substances in an environment. It is often the result of human interference. Learn about physical, chemical and biological pollutants and see examples of each.
5. Water Pollution: Definition, Types, and Sources
In this lesson, you will learn about the different types and sources of water pollution. You will gain an understanding of both surface water and groundwater pollution and the similarities and differences between them.
6. 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.
7. 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.
8. 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.
9. 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.
10. 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.
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Other chapters within the Fundamental Biology course
- Basic Terms & Skills in Biological Science
- Basic Science Lab Skills
- Inorganic Chemistry Review for High School Biology
- Introduction to Organic Chemistry
- Enzyme Function, Interactions & Regulation
- Cell Biology
- Requirements of Biological Systems
- Cell Communication
- Cellular Metabolism & Respiration
- Cell Growth & The Process of Cell Division
- The Nucleotide Structure of DNA & RNA
- Processes & Steps of DNA Replication
- The Transcription and Translation Process
- Mendelian Genetics & Mechanisms of Heredity
- Types & Effects of Genetic Mutations
- DNA Technology and Genomics
- Bacterial Biology Overview
- The Origin of the Universe and Life on Earth
- Geologic Time
- Evolution Overview
- Phylogeny and the Classification of Organisms
- Plant Biology
- Plant Reproduction and Growth
- Introduction to Fungi
- Introduction to Invertebrates
- Introduction to Vertebrates
- Physiology I: The Circulatory, Respiratory, Digestive, Excretory, and Musculoskeletal Systems
- Physiology II: The Nervous, Immune, and Endocrine Systems
- Animal Reproduction and Development
- Human Reproductive Systems
- Ecology and the Environment
- Animal Behavior
- Basic Molecular Biology Laboratory Techniques
- Analyzing Scientific Data