The primary cause of oxygen depletion in a water body is from excessive algae and phytoplankton growth driven by high levels of phosphorus and nitrogen . During the nighttime hours, these photosynthetic organisms consume oxygen through respiration when engaging in active photosynthesis.
What best explains why municipal governments have focused on waste reduction and recycling programs?
What best explains why municipal governments are now focusing on waste reduction and recycling programs? number of landfills has declined, which has increased the cost of waste disposal . When radioactive isotopes decay they emit radiation that is harmful to humans. ... Why were open dumps in the US banned in 1983?
Which of the following is responsible for the growing hypoxic or dead zone problem in the Gulf of Mexico quizlet?
The annually recurring Gulf of Mexico hypoxic zone is primarily caused by excess nutrient pollution from human activities , such as urbanization and agriculture, occurring throughout the Mississippi River watershed.
Which of the following best describes why open dumps in the US were banned in 1983?
Which of the following best describes why open dumps in the U.S. were banned in 1983? municipal waste was attracting wild animals and generating air pollution from fires.
Which of the following is responsible for groundwater contamination quizlet?
Industrial, agricultural, domestic contaminants are all responsible for the pollution of groundwater, along with fracking, and leaking from industrial landfills and waste disposal sites, surface impoundments, agricultural fields, forests, and abandoned wells.
How can municipal solid waste be reduced?
- Take reusable bags to the grocery store instead of single-use plastic bags.
- Select items with limited or no packaging.
- Use a refillable container for water in place of bottled water.
- Reduce “junk mail”. ...
- Think twice before printing material from the internet.
What is the process of reducing waste?
Waste minimisation is a set of processes and practices intended to reduce the amount of waste produced. ... Traditional waste management focuses on processing waste after it is created, concentrating on re-use, recycling, and waste-to-energy conversion.
Which of the following would most likely cause a hypoxic dead zone in a body of water adjacent to an agricultural field?
The cause of such “hypoxic” (lacking oxygen) conditions is usually eutrophication , an increase in chemical nutrients in the water, leading to excessive blooms of algae that deplete underwater oxygen levels.
Which of the following is a cause of hypoxic or dead zones in the ocean quizlet?
Dead zones are hypoxic (low-oxygen) areas in the world’s oceans and large lakes, caused by “ excessive nutrient pollution from human activities coupled with other factors that deplete the oxygen required to support most marine life in bottom and near-bottom water.
Which factors create hypoxia during eutrophication quizlet?
Hypoxia can be caused by a variety of factors, including excess nutrients, primarily nitrogen and phosphorus, and waterbody stratification (layering) due to saline or temperature gradients . These excess nutrients can promote algal overgrowth and lead to eutrophication.
Why are open dumps a problem?
Open dumps cause degradation of environment because of open burning, groundwater and surface water pollution, soil pollution and decrease in vegetation abundance.
What was the problem with open dumps?
If allowed to remain, open dumps often grow larger, and may attract dumping of both solid and hazardous wastes. Open dumps pose the following health, safety, and environmental threats: Fire and explosion . Inhalation of toxic gases .
Which of the following best describes why open dumps in the US were banned in 1983 quizlet?
Which of the following best describes why open dumps in the U.S. were banned in 1983? municipal waste was attracting wild animals and generating air pollution from fires.
Which of the following is responsible for groundwater contamination?
Groundwater contamination occurs when man-made products such as gasoline, oil, road salts and chemicals get into the groundwater and cause it to become unsafe and unfit for human use. Materials from the land’s surface can move through the soil and end up in the groundwater.
Which of the following are sources of groundwater contaminants quizlet?
What are some sources of groundwater contamination? Spills, leaks, seepage or application . Liquid hazardous substances are spilled and soak down through the soil or rock into the groundwater.
Which of the following is a source of groundwater pollution?
The significant sources of contamination in groundwater are farming chemicals, septic waste, landfills , uncontrolled hazardous waste, storage tanks, and atmospheric pollutants.
What is the human activities that caused environmental problems of poor solid waste disposal?
Open dumping, open burning and un-engineered sanitary landfills are common practice throughout the country. Due to improper solid waste disposal and collection systems dwellers are facing serious negative environmental impacts in developing countries [1].
Which of the following causes could lead to the waste of extra processing?
Excess processing is a sign of a poorly designed process. This could be related to management or administrative issues such as lack of communication, duplication of data, overlapping areas of authority and human error . It may also be the result of equipment design, inadequate job station tooling or facility layout.
Which of the following wastes is called the municipal solid waste?
Explanation: Rubbish, food waste and food waste are municipal solid waste, whereas radioactive substances are industrial waste.
What makes up most of the municipal solid waste?
Food made up the largest component of MSW combusted at approximately 22 percent. Rubber, leather and textiles accounted for over 16 percent of MSW combustion. Plastics comprised about 16 percent, and paper and paperboard made up about 12 percent. The other materials accounted for less than 10 percent each.
Which process helps to reduce overproduction?
Kanban is a Lean manufacturing technique that was developed to reduce the waste of overproduction. ... This adds control to manufacturing or other processes. Hardware developers who outsource PCB and device manufacturing can avoid overproduction by choosing a partner that does not require large production runs.
How can we reduce waste stream?
- Compost. Organic waste is typically the heaviest portion of the waste stream. ...
- Audit your facility. ...
- Reduce packaging. ...
- Eliminate bottled water. ...
- Give food waste to pigs. ...
- Go paperless. ...
- Measure it. ...
- Collect e-waste every day.
What are dead zones What are the causes of dead zones?
Dead zones are areas of water bodies where aquatic life cannot survive because of low oxygen levels. Dead zones are generally caused by significant nutrient pollution , and are primarily a problem for bays, lakes and coastal waters since they receive excess nutrients from upstream sources.
What caused hypoxia?
Some of the most common causes of hypoxemia include: Heart conditions , including heart defects. Lung conditions such as asthma, emphysema, and bronchitis. Locations of high altitudes, where oxygen in the air is lower.
What activities cause hypoxia?
Hypoxia occurs most often, however, as a consequence of human-induced factors, especially nutrient pollution (also known as eutrophication). The causes of nutrient pollution, specifically of nitrogen and phosphorus nutrients, include agricultural runoff, fossil-fuel burning, and wastewater treatment effluent .
What are the causes of dead zones in the ocean they occur where ______ quizlet?
Hypoxic (low oxygen) areas in the world’s oceans and large lakes, caused by excessive nutrient pollution from human activity . this depletes the oxygen required to support marine life. How many current dead zones are there? You just studied 13 terms!
How does eutrophication lead to low oxygen levels?
In eutrophic lakes, algae are starved for light . When algae don’t have enough light they stop producing oxygen and in turn begin consuming oxygen. Moreover, when the large blooms of algae begin to die, bacterial decomposers further deplete the levels of oxygen.
What causes eutrophication in the Gulf of Mexico?
Agriculture has caused an increase in the flow of nutrients from chemical fertilizers into bodies of water. The excess nutrients change the chemical composition of the water, impacting biological life forms in the affected areas. Sewage is another major source of nutrient flow to the Gulf.
How does nitrogen cause hypoxia?
Nitrogen and phosphorus are essential for plant growth, but an overabundance of these nutrients is called eutrophication and can result in algae bloom. The excessive algae growth then depletes the water of oxygen causing hypoxia.
What causes dead zones in the area where the Mississippi River runs into the Gulf of Mexico quizlet?
Runoff of sewage and agricultural wastes into coastal waters can carry large quantities of nitrate and phosphate plant nutrients , which can cause explosive growths of harmful algae and lead to dead zones during summer months.
What are the factors that cause dead zones describe eutrophication in particular as a cause?
Dead zones are caused by oxygen-depleting factors which include, but are not limited to, human pollution (4). This is a process called eutrophication, where oxygen levels decrease as elements such nitrogen and phosphorus increase. A healthy river will have increased amounts of oxygen for consumption by organisms (1).
Which of the following best describes open pit mining?
which of the following choices best describes open pit mining? dig down into a mountain from the top to extract ore . which of the following choices best describes subsurface mining?
What best explains why municipal governments have focused on waste reduction and recycling programs?
What best explains why municipal governments are now focusing on waste reduction and recycling programs? number of landfills has declined, which has increased the cost of waste disposal . When radioactive isotopes decay they emit radiation that is harmful to humans. ... Why were open dumps in the US banned in 1983?
Which of the following makes up the largest percentage of US municipal waste?
Food waste is the largest component of discards at 21 percent. Plastics comprise about 18 percent; paper and paperboard make up almost 15 percent; and rubber, leather, and textiles account for about 11 percent of MSW discards.
What are the causes of waste production?
Overpopulation, urbanization and the growing technology are among the few reasons for solid waste pollution. The rising population have lead to the production of more waste, with every passing year people have several kinds of stuff to use and discard. Technology has a very vast impact on the growing population.
What is the effects of ocean dumping to water pollution?
Marine dumping can destroy or degrade important habitats for aquatic species and cause coastal erosion and salutation , which affect the health and productivity of the marine environment.
Which gas is produced in open dumps from decomposition of biodegradable?
The dominant process in most landfills is the third process whereby anaerobic bacteria decompose organic waste to produce biogas , which consists of methane and carbon dioxide together with traces of other compounds.
Which of the following is the disadvantage of open dump?
Open dumping spreads foul odour . Open dumping also provides a place for germs, insects and other vectors to grow and spread different health problems. 2. Open dumping contaminates groundwater and it also occupies a very large area unnecessarily.
What waste goes to dumps?
Landfill sites contain both household and commercial rubbish . Household waste that gets sent to landfill consists of mostly organic waste, for example food, paper, cardboard or wood. Other household rubbish contains plastic or tin packaging. A lot of our individual rubbish is known as Municipal Solid Waste (MSW).
How does dumping rubbish affect the environment?
Illegal dumping can lead to oceanic pollution. The most common action we take as residents are throwing garbage into the bush or incinerating them . However, when they are non-biodegradable, they are collected by running water during the rain to waterways and lakes. These waste then causes the death of marine animals.
What is the main reason for depletion of groundwater?
Subsidies on electricity and high MSP for water intensive crops is also leading reasons for depletion. Water contamination as in the case of pollution by landfills, septic tanks, leaky underground gas tanks, and from overuse of fertilizers and pesticides lead to damage and depletion of groundwater resources.
When groundwater becomes contaminated it tends to remain contaminated because?
Just as ground water generally moves slowly, so do contaminants in ground water. Because of this slow movement, contaminants tend to remain concentrated in the form of a plume (see Figure 1) that flows along the same path as the ground water.
How groundwater contamination occurs from landfill?
Once waste is deposited at the landfill, pollution can arise from the percolation of leachate to the porous ground surface . Contamination of groundwater by such leachate renders it and the associated aquifer unreliable for domestic water supply and other uses.
