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
Air pollution is a mixture of harmful particles and gases in the atmosphere. Learn the definition of air pollution, discover its sources, and explore the different types of air pollutants that exist.
3. Global Warming: Atmospheric Causes and Effect on Climate
Global warming is a multifaceted and complex issue that involves both natural and human causes that increase the number of greenhouse gases. Learn how the atmospheric temperature can increase leading to global warming, explore some of its causes and how it affects climate change, and discover the role of the greenhouse effect on global warming.
4. The Ozone Layer: Importance and the Harmful Effects of Thinning
The ozone layer of the Earth absorbs the ultraviolet radiation coming from the Sun. Learn about the importance of ozone, discover how CFCs break down the ozone, explore the early discoveries about harmful effects of CFCs and the thinning of the ozone layer, and determine policies in place to protect the ozone.
5. Water Pollution: Definition, Types, and Sources
Water pollution occurs when harmful substances are mixed with and contaminate bodies of water. Learn more about the definition, types, and sources of water pollution to understand the causes of water contamination.
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
Water treatment is the process of removing harmful substances in the water to make it suitable for its end-use. Explore different ways of improving water quality, learn the process of water purification and wastewater treatment, and discover how developing countries provide drinking water to their citizens.
8. The Clean Water Act & Safe Drinking Water Act: Legislation for Clean Water
The Clean Water Act of 1972 and the Safe Drinking Water Act of 1974 regulate pollution and standards for water. Explore these legislations for living with clean water and what regulations both Acts provided.
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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