Question

Name any two sources from where mercury reaches water bodies and pollutes it. From water how does it reach the humans and what harm does it cause to them ?

Answer 1

Mercury is a toxic heavy metal which cycles through atmosphere, water, and soil in various forms to different parts of the world. Due to this natural cycle, irrespective of which part of the world releases mercury it could affect an entirely different part of the world making mercury pollution a global concern. Mercury pollution is now identified as a global problem and awareness has been raised on an international action plan to minimize anthropogenic mercury emissions and clean up mercury pollution. The 2002 Global Mercury Assessment concluded that "International actions to address the global mercury problem should not be delayed”.[2]Among many environments that are under the impact of mercury pollution, the ocean is one which cannot be neglected as it has the ability to act as a “storage closet” for mercury.[3]According to a recent model study the total anthropogenic mercury released into the ocean is estimated to be around 80,000 to 45,000 metric tons and two thirds of this enormous amount is estimated to be found in waters shallower than 1000m level where many consumable fish live.[4] Mercury can get bio-accumulated in marine food chains in the form of highly toxic methyl mercury which can cause health risks to human seafood consumers.[5][6] According to statistics, about 66% of the global fish consumption comes from ocean. Therefore, it is important to monitor and regulate oceanic mercury levels to prevent more and more mercury reaching human population through seafood consumption.

Answer 2

Answer:

look down

Explanation:

Mercury contamination is global and affects many waters that have no obvious mercury source. ... Mercury is emitted by natural sources, such as volcanoes, geothermal springs, geologic deposits, and the ocean. Human-related sources primarily include coal combustion, waste incineration, industrial uses, and mining.

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