About This Chapter
Environmental Concerns - Chapter Summary and Learning Objectives
There are many environmental concerns that can come up in life science, and in this series of lessons, you'll learn about some of the most significant. You'll get an overview of pollution (with focused lessons discussing air and water pollution), the causes and effects of global warming, the thinning ozone layer, and access to clean drinking water. These videos are led by an experienced life science instructor, and at the end of the chapter, you should be able to:
- Define three types of pollution
- Discuss global warming and the ozone layer
- Discuss environmental problems related to groundwater
- Describe treatment and access issues related to water
|Pollution: Physical, Chemical, and Biological||Define what a pollutant is and discuss three aspects of pollution; be able to give some examples of each type.|
|What Is Air Pollution? - Definition, Sources, and Types||Define air pollution, identify natural and man-made sources of it, and examine six major classifications of air pollutants.|
|Global Warming: Atmospheric Causes and Effect on Climate||Describe the causes of global warming and learn about effects like the greenhouse effect and the increased concentration of carbon dioxide.|
|The Ozone Layer: Importance and the Harmful Effects of Thinning||Explain the function of the ozone layer in protecting us from the sun's radiation, find out what chlorofluorocarbons do to the ozone layer, and discuss the risks associated with a thinner ozone layer.|
|Water Pollution: Definition, Types, and Sources||Define water pollution, discuss point and non-point sources, and distinguish between surface water and groundwater pollution concerns.|
|Environmental Problems Associated With Groundwater||Summarize three environmental problems related to groundwater issues: pollution, overuse, and sinking of the land.|
|Water Treatment: Improving Water Quality||Discuss primary, secondary, and tertiary treatments; compare water treatment in the U.S. versus other countries.|
|The Clean Water Act and Safe Drinking Water Act: Legislation for Clean Water||Compare the goals of these two efforts to improve access to clean, drinkable water.|
1. 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.
2. 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.
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. 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.
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. Environmental Problems Associated With Groundwater
Groundwater is an important natural resource, but like many of our other resources, it's affected by the surrounding environment and human activities. In this video lesson, you'll learn about some of the environmental problems associated with groundwater and why groundwater is especially vulnerable to them.
7. Water Treatment: Improving Water Quality
In this lesson, you will learn how water is purified for drinking, and how wastewater is treated before being put back into the environment. You will also learn about water purification issues in developing countries.
8. The Clean Water Act & Safe Drinking Water Act: Legislation for Clean Water
In this lesson, you will learn about the Clean Water Act of 1972 and the Safe Drinking Water Act of 1974. You'll discover how both laws help keep our waters free of pollution and safe for everyday use.
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Other chapters within the Life Science: Middle School course
- Introduction to Life Science
- Characteristics & Chemicals of Life
- The Parts of Cells
- DNA Replication & Mutation
- Cell Division & the Cell Cycle
- How Living Organisms Get Energy
- Classification of Organisms
- The Origin & History of Life On Earth
- Genetics & Hereditary Traits
- Genetic Engineering Basics
- Natural Selection & Evolution in Life Science
- Microbiology & Types of Microbes
- Introduction to Ecosystems
- Types of Ecosystems
- Changing Ecosystems
- Birds & Mammals
- Animal Behavior & Communication
- Mammal Reproduction & Development
- The Respiratory System
- The Cardiovascular System
- The Blood Vessels
- The Digestive System
- The Urinary & Endocrine Systems
- The Brain & Nervous System
- The Muscular System
- The Skeletal System & Connective Tissue
- Sight, Hearing & Other Senses
- Health Issues & Concerns
- Plant Biology & Structure
- How Plants Grow & Reproduce
- Natural Resources
- Earth History & Geologic Time