If pregnant woman eat a large amount of contaminated fish from the Hudson River their children are more likely to be born with birth defects. These contaminants are also known to cause damage to the nervous system, immune system, and the reproductive system. PCB’s can also cause a specific type of cancer. In 1983 they delcared the Hudson River a Superfund. It has ben turned into one of the nations largest Superfund Sites.
Consequences The most conspicuous effect of cultural eutrophication is the creation of dense blooms of noxious, foul-smelling phytoplankton that reduce water clarity and harm water quality (Figure 2). Algal blooms limit light penetration, reducing growth and causing die-offs of plants in littoral zones while also lowering the success of predators that need light to pursue and catch prey (Lehtiniemi et al. 2005). Furthermore, high rates of photosynthesis associated with eutrophication can deplete dissolved inorganic carbon and raise pH to extreme levels during the day. Elevated pH can in turn ‘blind' organisms that rely on perception of dissolved chemical cues for their survival by impairing their chemosensory abilities (Figure 3) (Turner & Chislock 2010).
2. Do background research – Utilizing at least one scholarly source, describe how variations in dissolved oxygen content in a body of water can affect fish populations. Answer = “Oxygen depletions are the most common cause of fish kills in ponds. (Aquaplant, 2014).” Based on my observation of the chart and what I read, the higher the dissolved oxygen levels the number of fish drops. Dissolved oxygen levels can also cause fish to suffocate and be more susceptible to diseases.
| Polluted water in the Yangtze—which officials have called “cancerous”—may also be transferred northward, bringing with it diseases like schistosomiasis (bilharzia), which can damage internal organs and harm children’s brain development. | Local governments built passageways for fish disrupted by the canals, supplementary dams to ensure consistent water flow, and wastewater-treatment plants to reduce pollution. | These spiraling costs mean there’s a risk that the SNWDP could turn into China’s largest white elephant—an unused network of canals and structures across the country. | By alleviating water shortages, the SNWDP is supposed to add between 0.12 percent to 0.3 percent to annual GDP growth and create up to 600,000 jobs. | Construction material, labor, and added expenses
The first step steps in this trail are Squeezing poison into the men’s eyes, and then have to go through a very intense beatings and whippings. Squeezing the poison from the frog is believed to improve vision, increase stamina, and running ability during the hunt. The intense beating and whippings are said that the whipping received helps decrease laziness. This ritual was not only used on the men but was also used to correct the behaviors of children and pregnant woman. Compared to the first two steps the last two steps of the trail look like a Matis massage.
Megan Jackson English 201 Bauman September 14, 2015 “Human-Animal Food Web” Sandra Steingraber wrote “Tune of the Tunafish” as to raise awareness about the mercury in seafood. There is an especially heavy concern towards the high levels which are in tuna fish, Steingraber says. High mercury content in fish has been known to have many negative effects on the human body. Some of these negative effects can be very serious and threatening, especially when considering neurological health. As Steingraber stated in her story, “Mercury has been shown to paralyze migrating brain cells and hold back their cell division.
Cigarettes are also one of the top purchased items in the world. “Worldwide, approximately 10 million cigarettes are purchased a minute, 15 billion are sold each day, and upwards of 5 trillion are produced and used on an annual basis” (Martin). Smoking is harmful to smokers and even the people and environment that surround them. The smoke from tobacco contains over 4,000 chemical, 450 of those chemicals are very harmful and even deadly to humans (“Tobacco”). Cigarette smoking should be banned because they are harmful to the smokers’ health, they’re harmful to nonsmokers’ health, as well as, being harmful to our environment; however, banning the use cigarettes could be very detrimental for our economy.
Demand for Dissection Specimens Increases Pressure on Threatened Species Researchers from the World Conservation Union reported in 2004 that a third of all amphibian species around the globe, including frogs, were threatened with extinction. Although habitat loss, pollution and climate changes are the primary causes, demand for dissection specimens only makes matters worse. Analysts estimate that as many as six million wild frogs are destroyed each year in the U.S. alone for dissection! (Couldn’t find Canadian Information) Frog dissection has many benefits, including specific lessons that extended basic biology. It has its negative side with the declining population but it also has a very good experience for the human race’s
With the depletion of the forest that converts the carbon dioxide into oxygen it has monumental negative effects on the planet as a whole. “Eleven developing countries recently linked to 82 percent of the carbon dioxide buildup due to deforestation will likely come under the greatest pressure for change: Brazil, Indonesia, Colombia, Cote D’Ivoire, Thailand, Laos, Nigeria, Vietnam, Philippines, Myanmar (Formally Burma) and India”. (“cooper”) One of the major locations deforestation is in the south Asian country Thailand. “Located wholly within the tropics, Thailand encompasses diverse ecosystem, including the hilly forested areas of the northern frontier, the fertile rice fields of the central plains, the broad plateau of the northeast, and the rugged coast along the narrow peninsula.”(“Thailand”). Since the formation of the country Thailand
Unfortunately, humans are the most polluting species on the planet. Pollution occurs at different levels and it doesn't just impact our planet; it impacts all species, including mankind, who dwell on it. We pollute water with chemicals and waste products from factories.Water pollution has led to a decrease in the number of various aquatic animals. Several aquatic life forms are on the verge of extinction. Vehicles, trains and planes emit toxic gases, creating air pollution.