c. large ships. d. land. 4. Which statement is false about the April, 2010 explosion of the Deepwater Horizon drilling rig? a. It caused the largest oil spill to date. b.
Jun 26, 2015 - Explain how fertilizer in runoff leads to algal blooms and dead zones. â¢ Give examples of point-source pollution, and define thermal pollution. â¢ Describe how the ocean is being polluted with trash and why ocean water is becoming m
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countries every year. Sources of Water Pollution. Water pollution contributes to water shortages by making some water sources unavailable for use. In underdeveloped ... water contamination in developing countries is raw sewage. ... Oil and other petr
Explain how fertilizer in runoff leads to algal blooms and dead zones. â¢ Give examples of point-source pollution, and define thermal pollution. â¢ Describe how the ocean is being polluted with trash and why ocean water is becoming more acidic. Les
Every year dead zones appear in lakes and nearshore waters. A dead zone is an area of hundreds of kilometers of ocean without fish or plant life (Figure 1.4). FIGURE 1.4. The Gulf of Mexico dead zone is created by the Mississippi River, which carries
Apr 27, 2015 - b. too many algae. c. dead zones. d. two of the above. 4. Bacteria are most likely to contaminate water if it is polluted by a(n) a. oil refinery. b. chemical plant. c. nuclear power plant. d. sewage treatment plant. 5. Nuclear power p
come from a wide spread area such as run-off from roads, lawns, farms and cities. ... URL below. URL: http://www.ck12.org/flx/render/embeddedobject/60939. 2 ...
CK-12 Foundation is a non-profit organization with a mission to reduce the cost of textbook materials for the K-12 market both in the U.S. and worldwide.
Using an open-source, collaborative, and ... Sources of water pollution ... At any given time, half of the world's hospital beds are occupied by patients suffering ...
Answer Key. Vocabulary: bacterial pollution, nutrient pollution, sediment pollution, toxic pollution, water pollution. Prior Knowledge Questions (Do these BEFORE ... Activity A: Types of water pollution. Get the Gizmo ready: â¢ Check that the TYPE t
In a marine ecosystem, algae are the producers. ... Ocean acidification occurs when excess carbon dioxide in the atmosphere causes the oceans to become ...
It includes the water that goes down your shower drain and that is flushed down your toilet. Instead of dumping wastewater directly into rivers, wastewater can be ...
reduce the cost of textbook materials for the K-12 market both ... Distinguish point source pollution from nonpoint source pollution. ... This excess of nutrients allows the algae to grow beyond control, bring harm to the rest of the ecosystem.
Water Pollution. Dana Desonie, Ph.D. Say Thanks to the Authors. Click http://www.ck12.org/saythanks. (No sign in required) ...
Can you gauge the health of a river by just looking at it? Why or why ... What can happen to a person who goes swimming in a bacteria-rich stream? Review. 1.
We need to reduce how much pollution ends up in the water ... The water is passed through filters that remove smaller particles from the water. This is called ...
Use water wisely. By conserving water, the amount of wastewater needing treatment and disposal will be reduced. Overwatering and runoff can carry pollutants into the storm drain system. Use and dispose hazardous substances properly. Always read the p
reduce the cost of textbook materials for the K-12 market both ... This excess of nutrients allows the algae to grow beyond control, bring harm to the rest of the ...
Responsibility for regulating pollution in NSW rests primarily with the State government, through the Environment Protection Authority (EPA) and the Office of. Environment and Heritage (OEH). Local councils also have some responsibility for regulatin
such as chemicals dumped through a drainage pipe or a specific landfill. Non-point sources are pollutants that may not be traceable to any one particular source, but a collection of pollutants that collectively cause contamination. These sources are
conference room and an employee shower/locker room ... area and a computer server room. ... Connect with us: Facebook | Twitter | YouTube | Google Plus.
It is part of the federal government's effort to keep our streams and oceans clean and eliminate pollution discharge. ... approximately 2,200 storm drain outfalls or openings at the end of a storm drain system that allows water to flow into a channel
Water Pollution Dana Desonie, Ph.D.
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Is polluted water like this only seen in developing nations? There is certainly polluted water in developed nations, but that water is cleaned and purified before it is put in taps and sent to people’s homes. Pollutants come from a variety of sources.
Freshwater and ocean pollution are serious global problems that affect the availability of safe drinking water, human health, and the environment. Waterborne diseases from water pollution kill millions of people in underdeveloped countries every year.
Sources of Water Pollution
Water pollution contributes to water shortages by making some water sources unavailable for use. In underdeveloped countries, raw sewage is dumped into the same water that people drink and bathe in. Even in developed countries, water pollution affects human and environmental health. Water pollution includes any contaminant that gets into lakes, streams, and oceans. The most widespread source of water contamination in developing countries is raw sewage. In developed countries, the three main sources of water pollution are described below. 1
www.ck12.org Municipal Pollution
Wastewater from cities and towns contains many different contaminants from many different homes, businesses, and industries ( Figure 1.1). Contaminants come from: • • • • •
Sewage disposal (some sewage is inadequately treated or untreated). Storm drains. Septic tanks (sewage from homes). Boats that dump sewage. Yard runoff (fertilizer and herbicide waste).
FIGURE 1.1 Municipal and agricultural pollution.
Large numbers of sewage spills into San Francisco Bay are forcing cities, water agencies and the public to take a closer look at wastewater and its impacts on the health of the bay. QUEST investigates the causes of the spills and what’s being done to prevent them. Watch the investigation at http://science.kqed.org/quest/video/wastewater-woes-sewage-spills-in-sf-bay/ .
MEDIA Click image to the left or use the URL below. URL: http://www.ck12.org/flx/render/embeddedobject/116516
Factories and hospitals spew pollutants into the air and waterways ( Figure 1.2). Some of the most hazardous industrial pollutants include: • • • • •
Radioactive substances from nuclear power plants and medical and scientific sources. Heavy metals, organic toxins, oils, and solids in industrial waste. Chemicals, such as sulfur, from burning fossil fuels. Oil and other petroleum products from supertanker spills and offshore drilling accidents. Heated water from industrial processes, such as power stations.
Runoff from crops, livestock, and poultry farming carries contaminants such as fertilizers, pesticides, and animal waste into nearby waterways ( Figure 1.3). Soil and silt also run off farms. Animal wastes may carry harmful 2
Chapter 1. Water Pollution
FIGURE 1.2 Industrial Waste Water: Polluted water coming from a factory in Mexico.
different colors of foam indicate various chemicals in the water and industrial pollution.
diseases, particularly in the developing world.
FIGURE 1.3 The high density of animals in a factory farm means that runoff from the area is full of pollutants.
Fertilizers that run off of lawns and farm fields are extremely harmful to the environment. Nutrients, such as nitrates, in the fertilizer promote algae growth in the water they flow into. With the excess nutrients, lakes, rivers, and bays become clogged with algae and aquatic plants. Eventually these organisms die and decompose. Decomposition uses up all the dissolved oxygen in the water. Without oxygen, large numbers of plants, fish, and bottom-dwelling animals die. Summary
• Municipal pollution comes from sewage, storm drains, septic tanks, boats, and runoff from yards. • Industrial pollution, from factories and hospitals, includes radioactive substances; heavy metals and other pollutants in industrial waste; by-products of fossil fuel burning; oil and other petroleum products; and heat 3
www.ck12.org from factories and power plants. • Agricultural pollutants include wastes from animals, pesticides, herbicides, fertilizers, and soil. Practice
Use this resource to answer the questions that follow. https://www.youtube.com/watch?v=phmN-IpR3xw 1. 2. 3. 4. 5. 6.
What is an example of point source pollution? What is our biggest threat to clean water, at least in Indiana? What are the common pollutants carried in non-source pollution? Why does non-point source pollution have the greatest impact on water quality? How does non-point source pollution end up in our water sources? What are some of the common causes of non-point source pollution?
1. How can fertilizers, which help things grow, be pollutants? 2. Why is raw sewage a major pollutant in some countries but not in developed countries? 3. How could heat be a pollutant? What damage could it cause?
References 1. Courtesy of the US Environmental Protection Agency. Municipal and agricultural pollution . Public Domain 2. Calexico New River Committee. Polluted water pouring into a stream coming from a factory in Mexico . Public Domain 3. Image copyright mosista, 2014. This chicken farm means that runoff from the area is full of pollutants . Used under license from Shutterstock.com