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`@` Tôi viết thành các ý cho bạn dễ hiểu :
`-` Đầu tiên là lời chào đến thính giả :
 

      Good morning/afternoon everyone `!` . My name is ... Today , I'm glad because it is my honor  to present about this topic : How many types of environmental pollution are there `?` . As we know , in present era , we are facing with a lot of social issues . And , environmental pollution is one of them . To set off my presentation , let's discuss about main idea : The numbers of environmental pollution we are dealing . There are different ways to classify environmental pollution , but one common way is to group them by the environment they affect . According to this method , there are seven main types of environmental pollution .

`-` Tiếp đến sẽ là phần thân bài giới thiệu vấn đề chính :

`@` Foremost , air pollution is one of the most dangerous issues which has been ever known . We should talk about what is the concept of air pollution . This is the contamination of the atmosphere by harmful substances such as smoke , smog , particulate matter , and toxic gases and so on . It can cause respiratory problems , global warming , acid rain , and ozone depletion . 

`@` Next , water pollution is also an alarming problem to our life . There are various ways of contamination . The most common pollution we know is the contamination of water bodies such as rivers , lakes , oceans , and groundwater by harmful substances such as sewage , industrial waste , chemicals , oil spills , and plastic . Its consequences is very serious . It can cause diseases , eutrophication , loss of biodiversity , and marine pollution .

`@` Moreover , the contamination of the soil by harmful substances such as pesticides , fertilizers , solid waste , and mining activities called land pollution is also a serious issue . This type of contamination can cause soil erosion , soil infertility , desertification , and land degradation . This makes agriculture less productive and unable to increase .

`@` To extend , this type of pollution may annoy to many people who are allergic to noise . That is noise pollution . It often happens in many overcrowded places . Noise contamination is the excessive or unwanted sound that disturbs the natural balance of the environment and affects the health and well-being of humans and animals . It can cause hearing loss , stress , hypertension , sleep disturbance , and annoyance .

`@` Mình ghi nội dung ra , bạn có thể thêm từ nối các kiểu nhé :

`@` Thermal pollution : The increase or decrease of the temperature of a natural water body or the atmosphere by human activities such as power plants , industries , and urbanization . It has the ability to cause thermal shock , reduced dissolved oxygen , altered metabolism , and migration of aquatic organisms .

`@` Light pollution : The excessive or inappropriate artificial light that interferes with the natural cycles of the environment and affects the visibility of the night sky and the behavior of nocturnal animals . It can cause energy waste , glare , skyglow , and light trespass .

`@` Radioactive pollution : the contamination of the environment by radioactive substances that emit harmful radiation such as alpha , beta , and gamma rays . It can cause cancer , genetic mutations , birth defects , and nuclear disasters .

`-` Tiếp theo sẽ là phần kết bài :

`@` Environmental pollution is a serious problem that affects the health and well `-` being of humans , animals , and plants , as well as the natural balance of the ecosystem . There are different types of environmental pollution , such as air , water , soil , noise , light , thermal , radioactive , and plastic pollution . Each type of pollution has its own causes , effects , and solutions . By learning about the various kinds of environmental pollution , we can understand how to prevent and reduce them , and protect our planet from further damage .

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