The air quality on the shoreline of Lake Huron is the worst in the south Ontario area. (Sivers, A, n.d) Sediment loading is known to high levels of deferred solids being washed into creeks and rivers and carried down into the lake. (Sivers, A, n.d) Sediment loading can also be caused by dredging which can cause a decrease in food source for the aquatic life. With having foreign vessels follow in and out of the lake from the Atlantic is also causing problems. With the vessels having foreign aquatic life attached to the bottom of the ship and also leaking fluids into the lake while passing through.
The air pollutants have an adverse effect on human health. The major outdoor air pollutants in Canada are ground-level ozone, particulate matter, carbon monoxide, sulphur dioxide and nitrogen oxides. These air pollutants are the major cause of smog and acid rain. The burning of fossil fuels such as coal, oil and gasoline emits these air pollutants as by-products. Energy consumption and residential wood heating is the greatest single source of air pollution in Canada.
In this environmental disaster, 10 cubic meters of water and 4.5 million cubic meters of potentially toxic slurry were spilled into virtually untouched forest, lakes and rivers. If something like this happens at the Pebble Mine, then most of the fish and wildlife in Bristol Bay would be in danger of being killed. A species that would be greatly affected by this is the sockeye salmon. More than half of the world’s population of these fish lives in Bristol Bay. This means that the survival of this species would be threatened.
This would be terrible for the people and creatures that rely on this mighty river to live. Dams, diversions and evaporation losses from reservoirs also contribute to the lessening of water available from the river, causing ecological consequences to wildlife living in and along the river. The Colorado River used to carry up to 85 to 100 million tons of silt or sediment to the Gulf of California where it deposited into the sea. The sediment helped things along the river path grow and flourish. Over the years, the silt has been collecting in Lake Mead, the nation’s largest reservoir, and it is predicted that over the next few hundred years this lake will fill up with silt.
Environmental Hazards a. In the St. Lawrence River, lots of industry has resulted in high levels of toxic chemical such as polychlorinated biphenyls (PCBs) and dichlorodiphenyltrichloroethane (DDT) and heavy metals. b. Because these toxins affect not only one specie but also all of species that are interconnected by food chain. c. These pollution decline beluga’s immune system, get disease easily that linked to low birth rates of belugas which have lived in the St. Lawrence River.
Pollution in seasonal wetlands Wetlands are considered habitats that help trap and reduce pollutants that come from all types of sources, such as oils from cars, chemicals from drainage runoff, sprinklers that have fertilizer runoff from nearby grass located around buildings, agriculture runoff, untreated sewage from pets and human waste, and in flow of domestic and industrial wastes. Other harmful chemicals that are human related are antibiotics from animal husbandry, pesticides that act as endocrine disrupters. (Ramsar 2008) These pollution sources all contribute to the negative health of wetlands all over California. Roseville wetlands are being inundated with water pollution from many of these human related sources around them. Wetlands can only handle so much of these pollutants, and with the major habitat loss that has completely changed the dynamics of these once seasonal wetlands, can only limit the ability for these wetlands to filter as much of the pollution as possible.
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). When these dense algal blooms eventually die, microbial decomposition severely depletes dissolved oxygen, creating a hypoxic or anoxic ‘dead zone' lacking sufficient oxygen to support most organisms. Dead zones are found in many freshwater lakes including the Laurentian Great Lakes (e.g., central basin of Lake Erie; Arend et al. 2011) during the summer. Furthermore, such hypoxic events are particularly common in marine coastal environments surrounding large, nutrient-rich rivers (e.g., Mississippi River and the Gulf of Mexico; Susquehanna River and the Chesapeake Bay) and have been shown to affect more than 245,000 square kilometers in over 400 near-shore systems (Diaz & Rosenberg 2008).
It also have some very harmful effects on humans and nature. It creates large amount of pollution, destroys the nature and also increases the diseases in human societies. As in documentary about “The Ethics of Fracking” by Marleen troy PhD (Environmental Engineer), Bernard Prausak and Rabbi Mordechai Liebling.
To purify polluted water we may use different type of methods according to the pollutants entered in the water. Chemical disinfection of water is one of the most important methods in the process of purifying water; this method can kill lots of pathogens that exist in the polluted water by killing them. http://www.informaction.org/images/graph_ocean-pollutants.jpg Fig 1 Water is made up of two hydrogen’s and one oxygen. Most part of the earth is water that means three fourth of the earth is made up of water but the problem is most of it is not suitable for drinking. https://qed.princeton.edu/getfile.php?f=Water_Pollution_since_the_1960s.jpg Fig 2 water pollution world wide In 1854 the British scientist John Snow discovered that cholera disease was caused by the contamination of water, he also showed that chlorine can be used to disinfect contaminated water to prevent such kind of diseases.
From an environmental perspective the Amazon is negatively affected from the burning of the trees which is polluting the biggest rainforest in the world with Carbon dioxide (Co2). Also, a lot of nutrients are being lost from deforestation and high quality soil is being wasted. Desertification is slowly happening in the Amazon and other rainforests. If deforestation continues the rainforests will start to lose bodies of water, as well as vegetation and wildlife. There are many problems that the rainforest biome encounters.