Topic 1: talk about the causes and effects of water pollution

It is true that water pollution is very harmful to our life. Water pollution is caused by the intentional or unintentional release of toxic chemicals/materials,contaminan and harmful compounds into various bodies of water such as rivers, lakes and the ocean. Without proper disposal or filtration of these pollutants they can spread throughout the water and effect all living animals and organisms that come into contact with it by contaminating any living thing that requires water for survival. They have many causes of water pollution for example: spills or leaks from oil and chemical containers, trade effluent going into surface water drains instead of foul water drains, or straight into watercourses, removing too much water from surface waters and groundwater, run-off containing fertilisers and pesticides from farming into surface waters. Most people have unconscious actions that cause water pollution. Not only in Vietnam but all over the world, there are some conscious components that cause environmental pollution and here, especially, water pollution. In addition to harming animals water pollution can also affect plants, trees, the soil and other natural materials and resources of the earth. All kinds of environmental pollution from the country and the air have a great impact on people. People always consider their unconscious actions to be small things, but those things have a bad impact on the surrounding environment. With just one plastic bag, it takes up to 500 years to completely decompose. During that time, the toxins contained in it also contaminate the soil, water, unpleasant odors that pollute the air and human health. All that harm will be suffered by humans if no remedy is taken and that is the worst that will happen in the future with this status quo continuing for a short while.

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