Which of the following is a major cause of cultural eutrophication?
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Which of the following is a major cause of cultural eutrophication?
Various Causes of Cultural Eutrophication The use of fertilizers is the leading cause of eutrophication. The use of fertilizers, especially nitrate and phosphate fertilizers on farms, lawns, and golf courses, result in the accumulation of phosphate and nitrate in the nearby water body sources.
What water pollutant most commonly threatens human health?
29 Cards in this Set
| Factories, sewage treatment plants, and oil wells are __________ sources of water pollution. | point |
|---|---|
| Atmospheric deposition of contaminants is an excellent example of | nonpoint pollution. |
| The water pollutant that most commonly threatens human health is | pathogenic organisms. |
What is the largest source of nonpoint air and water pollution quizlet?
They are : parking lots – grease, toxic metals, and sediments that collect on impervious surfaces are a major source of nonpoint pollution. Additionally parking lots disrupt the hydrologic cycle by preventing rain from soaking into the ground and worsening local flooding and erosion.
Which of the following are inorganic toxic substances?
Toxic inorganic substances include salts of the metals copper, silver, lead, gold, nickel, chromium, zinc, cadmium and mercury, and the metalloid arsenic. Many of these are toxic even at low concentrations: less than 1mg l-1.
How do fertilizers cause eutrophication?
Eutrophication is a type of pollution caused when excess nutrients, primarily nitrogen and phosphorus, enter the water. The overload of nutrients cause algae to grow uncontrollably, depleting the water of oxygen as they die.
Which is not a major category of economic minerals?
Which is not a major category of economic minerals? a strategic metal. Metals are malleable substances that are useful and valuable because they are strong, relatively light, and can be reshaped for many purposes.
Which environmental impact would not be a result of placer mining?
Which environmental impact would not be a result of placer mining? contamination of underground aquifers.
What is a point source apes?
A point source is a type of pollution that can be seen and a non-point source is a source that is not easy to link to anything specific. An example of a non-point source is animal waste and an example of a point source is seeing a pipe from a building running directly to a stream. Define Eutrophication.
What caused the eggshells of some birds to become thin and break?
It can occur as a result of mining. What caused the eggshells of some birds to become thin and break? An insecticide ingested by prey species. exposure often occurs through shellfish.
What type of inorganics can cause health issues?
Inorganic pollutants comprise mainly of heavy metals, which are toxic or poisonous even at low concentrations. Example of heavy metals includes arsenic, mercury, lead, and chromium. They can enter body system through water, food, and air and cause health issues.
What class of pollutant can cause excessive growth of algae?
Nutrient pollution is the process where too many nutrients, mainly nitrogen and phosphorus, are added to bodies of water and can act like fertilizer, causing excessive growth of algae.
Why are feedlots bad for the environment?
One environmental downside of feedlots is that the way they concentrate and store manure often leads to high levels of local air and water pollution. In addition, runoff of nitrogen-rich manure into waterways can contribute to “dead zones” in coastal areas.
What is feedlot bloat and what causes it?
Feedlot bloat occurs in hand-fed cattle confined in feedlots and barns when insufficient roughage is fed or the feed is too finely ground. Two separate sets of circumstances conducive to feedlot bloat have been identified.
What’s the biggest cause of feedlot cattle death?
Most surveys support the conclusion that bovine respiratory disease (BRD) is the major cause of feedlot cattle death in the U.S. Most who work in the cattle feeding industry have a good feeling for their cattle’s major health problems. It’s based on experience, however, and there may be more than meets the eye.
What is feedlot production?
Feedlot production represents an intensive confinement system that has high input costs (compared with suckler calf and stocker production) associated with extensive infrastructure, feeding, medical, and labor costs. There are two types of feedlots, outdoor and indoor. The outdoor feedlot is suited for drier climates ( Fig. 1.25 ).