Water Pollution

A)


Water pollution occurs due to the contamination of water bodies such as lakes, rivers, oceans, etc. It affects not only individual species but also populations and ecosystems. It iscaused by the addition of dirty and harmful substances that are discharged directly or indirectly into water bodies.


We should support those environmental organizations which are concernedabout worldwide issues, such as water pollution, not only backing them but also undertaking their project to make the necessary improvement about this important matter.

B)

1. Global Analysis:Water pollution in Britain is mostly due to chemical wastes.


2. Detailed Analysis:


2.1

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2.2


A) The main reasons thatcontribute to water pollution are:




• The outflow of water polluted by phosphates, heavy metals and solvents after being used by factories. (Industrial cause)


• The seepage by theground of impure water (because of the effect that fertilisers and pesticides cause on it) from farm to gardens directing it to the water table. (Agricultural cause)


• The presence ofphosphates as part of many domestic cleaning products. Once they reach the water supply (if their levels are significant) the encourage algae to grow preventing sunlight to reach water and making theprocess of photosynthesys impossible. (Domestic cause)

• Accidental discharge of oil spillages from supertankers. (Industrial cause)

• Acid rain caused by emissions of carbon dioxide,sulfur dioxide and nitrogen oxides. (Industrial and Natural cause)




B)


The relation is that the writer first shows us the different causes of water
pollution at a samelevel. By this I mean that although he lays emphasis on chemical wastes as the main cause of water pollution in Britain I believe that by doing such organization the writer tries to tell us that any...