EARTHSC 2WW3 Lecture 4: Lecture 4 - Pollution & Clean Up.pdf

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Pollution & clean up: which bc mining company has recently admitted in court polluting the columbia river in washington state for more than a century, teck resources ltd [*, taseko mines limited, barrick gold corporation, thompson creek metals. This map illustrates the impact of water pollution on rivers shared by two or more countries. The problem of water pollution is distributed worldwide and has grown during the 20th century. This is attributed to population growth, expansion of industry, use of fertilizers and pesticides in agriculture. Water use has increased six fold and there is more waste in the water. This is a concern in 1/5 of the united nations environmental program regions. The major drainage basins mississippi river, islands of caribbean, indian ocean, and the coral sea. Water quality standards have been developed to protect human populations from pollution. These standards have been developed with a strict focus on medical issues. They are based on known medical effects.

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