Give a brief account of sources of marine water pollution?.
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About 80% of marine litter comes from land-based sources (eg. through drains, sewage outfalls, industrial outfalls, direct littering) while 20% comes from marine-based activities such as illegal dumping and shipping for transport, tourism and fishing
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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. ... The pollution often comes from nonpoint sources such as agricultural runoff, wind-blown debris, and dust.
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