MEA 200 Lecture Notes - Lecture 22: Dispersant, Joseph Hazelwood, Bligh Reef
30 Mar 2017
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Document Summary
Pollution the presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects. Marine pollution occurs when harmful effects result from the entry into the ocean of chemicals, particles, industrial, agricultural and residential waste, noise, or the spread of invasive organisms. 80% of marine pollution comes from land. Any single identifiable source of pollution from which pollutants are discharged, such as a pipe, ditch, ship or factory smokestack. Is caused by runoff (rainfall or snowmelt) moving over and through the ground. As the runoff moves, it picks up and carries away natural and human-made pollutants, finally depositing them into lakes, rivers, wetlands, coastal waters and ground waters. Concentration of pollutant that causes 50% mortality among test organisms. We use over 300 million tons of new plastic every year. Half of this we use just once and usually for less than 12 minutes.
