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Pollution. Acid rain is rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH ). Most water, including drinking water, has a neutral pH that exists between 6.5 and 8.5, but acid rain has a pH level lower than this and ranges from 4–5 on average. [ 1][ 2] The more acidic ...
Water pollution in Canada is caused by municipal sewage, urban runoff, industrial pollution and industrial waste, agricultural pollution, inadequate water infrastructure. This is a long-term threat in Canada due to "population growth, economic development, climate change, and scarce fresh water supplies in certain parts of the country."
Acid rain will cause Canada's lakes and rivers to become further acidified. This is a problem as it decreases levels of surface water calcium. This lower concentration of calcium is already having particularly adverse effects on plant life, as can be seen with the Daphnia species-an important food source for aquatic species and marine life.
The Air Quality Agreement is an environmental treaty between Canada and the United States. [1] [2] It was signed on 13 March 1991 by Canadian prime minister Brian Mulroney and American President George H. W. Bush and entered into force immediately. [3] It was popularly referred to during its negotiations as the " Acid Rain Treaty ", especially ...
Freshwater acidification. Diagram depicting the sources and cycles of acid rain precipitation. Freshwater acidification occurs when acidic inputs enter a body of fresh water through the weathering of rocks, invasion of acidifying gas (e.g. carbon dioxide ), or by the reduction of acid anions, like sulfate and nitrate within a lake. [1]
Nitrogen pollution can cause eutrophication, especially in lakes. Eutrophication is an increase in the concentration of chemical nutrients in an ecosystem to an extent that increases the primary productivity of the ecosystem. Subsequent negative environmental effects such as anoxia (oxygen depletion) and severe reductions in water quality may ...
The Experimental Lakes Area was established in 1968 by the Fisheries Research Board of Canada. Dr. John Reubec Vallentyne and Dr. W. E. Johnson of the Freshwater Institute created the Experimental Lakes Area (ELA). While Vallentyne was Scientific Leader of the Eutrophication Section from 1966 to 1972, he attracted a stellar staff of scientists ...
Environmental issues in Canada include impacts of climate change, air and water pollution, mining, logging, and the degradation of natural habitats. As one of the world's significant emitters of greenhouse gasses, [ 1] Canada has the potential to make contributions to curbing climate change with its environmental policies and conservation efforts.