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17 tháng 3 2021

Water pollution is the contamination of bodies of water such as lakes, rivers, oceans, and groundwater. Water pollution can have many different cause.The main reason for water pollution is the daily activities of everyone.The next reason, disasters always happen contaminate the water. Besides, the operation of the plant also pollutes the water. because industrial waste water has not been treated, it pollutes the water.  Water pollution brings a lot of bad effects to people. Firstly, it seriously affects human health. Secondly, it affects water sources and aquatic organisms because water is the habitat of fish, crabs, shrimp.  The most important measure is to raise the sense of responsibility of the community.In addition, we must save water; treatment of waste before being discharged into the environment.

14 tháng 5 2021

Environmental pollution has become a controversial issue that puts severe pressure on our rhythm of life. The pollution on Earth has reached such an alarming level that immediate involvement from governments and individuals collaboration now are of great importance. First and foremost, industrial activities are considered to be the main cause for air pollution. Along with the global industrialization, the burning of fossil fuels, motor vehicles and factories are contaminating the air by their emission of harmful fumes. In the second place, pervasive deforestation for land use, overuse of fertilizers and the dumping pollutants such as plas or non- biodegradable packing in the ground has affected the ecosystem and led to soil pollution. This puts bad long- term effects on vegetation and soil fertility. Serious attempt to relieve the effects of pollution and preserve the environment need to be made as soon as possible. Governments can monitor the exhaust purification process of large factories so that they can prevent dangerous exhaust from the environment. Moreover, stricter regulations and laws against forests exploitation can help preserve pristine environment. Individuals should be responsible and raise awareness for the protection of environment. In conclusion, pollution has increasingly become a threat to the globe, directly affects our life and for the sake of environment and all citizens around the world, we should work hand in hand to protect our friendly house- the earth.

14 tháng 5 2021

bạn đọc sai đề r á

6 tháng 5 2021

      There are many types of environment pollution in the world, air pollution is one of them. The main cause of air pollution is the smoke and dust released from factories. They are very toxic to us humans. And they are also very bad for the environment. In addition, air pollution is also generated from the exhaust fumes of motor vehicles such as motorcycles and cars. As a result, the air source in the flock is heavily polluted, causing a greenhouse effect, causing the Earth to heat up. The ice from the North and South poles is being melted due to rising sea levels, causing flooding. We need a way to fix them immediately, otherwise the consequences will be even more dangerous.

6 tháng 5 2021

#Tham khảo

Water pollution is the dumping of foreign materials in water. Water pollution has the following advantages: helps in disposing harmful materials off the land surface and is inexpensive. Disadvantages of water pollution include: waterborne diseases, death of aquatic life and hindrance to boating activities.Pollution is the introduction of contamination materials into the natural environment that causes adverse changes. There are many forms of pollution, including water pollution, soil pollution and air pollution. All types of pollution are known for their many harmful effects. However, water pollution helps in avoiding other forms of pollution. Dumping of waste in water helps to free the land of harmful materials. When chemicals from factories are dumped in water rather than on land, it means crops from rain-fed agriculture will not be affected. Water pollution prevents health hazards. When materials are dumped in rivers, they become unavailable to human beings and hence cannot affect them, for instance, poisonous food materials.Water pollution increases nutrient loading, leading to eutrophication. Organic wastes such as sewage and farm waste put high oxygen demand on the receiving water body resulting in oxygen depletion with drastic impacts on the entire ecosystem. A variety of pollutants discharged from industries, which include heavy metals, solids, organic toxins, nutrients and oils, reduce oxygen availability. Crops irrigated with water contaminated with heavy metals pose a health risk to humans.

We know that our country's traffic problem is very complicated. Often times traffic congestion, car accident. The reason is that the Vietnamese people do not have awareness when participating in traffic. often occupy the roadway, road traffic.all of the causes that often lead to car accidents when in traffic, traffic congestion, .... the way to avoid the above is when participating In traffic we should wear helmets, we must not go in the opposite direction, not occupy the roadway, do not dodge road traffic, do not ride too fast. The above things will limit the Vietnamese people from traffic accidents. We hope that the Vietnamese people are always conscious to reduce the rate of traffic accidents in our country.

thank you 

1. What will you do when a natural disaster occurs?
2.Causes and consequences of water pollution

22 tháng 2 2021

reason  consequence solution

27 tháng 10 2021

Môi trường hiện nay đang bị ô nhiễm nặng nề bởi chất thải của các khu công nghiệp, rác thải sinh hoạt, khói bụi các phương tiện giao thông. Với nhịp độ gia tăng dân số và tốc độ phát triển công nghiệp và hoạt động đô thị hóa như hiện nay thì diện tích đất canh tác ngày càng bị thu hẹp, chất lượng đất ngày càng bị suy thoái. Đối với nguồn nước bị ô nhiễm làm giảm độ đa dạng sinh vật trong nước. Ô nhiễm nước có nguyên nhân từ các loại nước, chất thải công nghiệp được thải ra lưu vực các con sông mà chưa qua xử lí đúng mức; các loại phân bón hoá học và thuốc trừ sâu ngấm vào nguồn nước ngầm và nước ao hồ; nước thải sinh hoạt được thải ra từ các khu dân cư ven sông gây ô nhiễm trầm trọng, ảnh hưởng đến sức khỏe của người dân, sinh vật trong khu vực. Ô nhiễm môi trường không khí là do khí thải của các nhà máy, khí thải từ phương tiện giao thông làm cho không khí không sạch hoặc gây mùi khó chịu, giảm thị lực khi nhìn xa do bụi. Như vậy, môi trường bị ô nhiễm là đe dọa đến cuộc sống con người. Chúng ta cần đánh lên hồi chuông cảnh báo để thức tỉnh mọi người, cần chung tay bảo vệ môi trường.

19 tháng 12 2016

* Nguyên nhân

  • Ô nhiễm nước ở sông hồ

- Nước thải của các nhà máy

- Sử dụng nhiều phân hóa học , thuốc trừ sâu dư thừa trên đồng ruộng

- Chất thải sinh hoạt , nông nghiệp của con người

  • Ô nhiễm biển

- Váng dầu và dàn khoan trên biển

- Tập trung nhiều đô thị trên bờ biển

- Các chất độc hại bị đưa ra biển

* Hậu quả

- Gây bệnh ngoài da , bệnh đường ruột cho con người

- Thiếu nước sạch cho đời sống và sản xuất.

- Tạo hiện tượng '' Thủy triều đen '', '' Thủy triều đỏ '' làm chết các sinh vật sống trong nước

* Giải pháp

Xử lí nước thải công nghiệp , nước thải sinh hoạt trước khi đổ vào cống , rãnh , sông , suối , biển ,...

19 tháng 12 2016
1.Ô nhiễm nước:
a/Nguyên nhân:
Nước thải CN, phun thuốc trừ sâu, phân bón hóa học,
rác thải sinh hoạt, váng dầu (khai thác,chuyên chở,đắm tàu), nước từ sông đổ ra,....
b/Hậu quả:
Gây bệnh tật cho con người (ngoài da, bệnh đường ruột,ung thư..v v).
- Tạo ra hiện tượng:
“Thủy triều đen”
“Thủy triều đỏ”,...
c/ Biện pháp:Xử lí nước thải, rác thải trước khi đổ vào môi trường, không lạm dụng phân bón hóa học,thuốc trừ sâu…
2/ Ô nhiễm không khí:
a/ Nguyên nhân.
- Nguồn nhân tạo:Khí thải từ công nghiệp, phương tiện giao thông, bất cẩn khi sử dụng chất phóng xạ…
- Nguồn tự nhiên : Núi lửa phun, bão cát, cháy rừng…
b/ Hậu quả.
- Mưa axít..
- Hiệu ứng nhà kính.
- Thủng tầng ôzôn .
- Trái đất nóng lên.
- Tăng các bệnh về hô hấp.
- Băng tan nhanh đe dọa các thành phố ven biển.
c. Biện pháp.
Bằng sự hiểu biết cuả bản thân em hãy nêu một số giải pháp nhằm hạn chế ô nhiễm không khí
- Cắt giảm lượng khí thải.
- Kí nghị định thư Kiô tô.

 
11 tháng 12 2021

My favorite sport is volleyball. I have been passionate about this sport since I was a boy. Growing up, I used to play with my friends after school every hour. We got together on the volleyball court in the school, then split into two teams to play. Every team tries to score points by hitting the ball over the net, and the ball must touch inside the field. If the team bounces off the pitch, the score belongs to the other team. Additionally, each team can get points when their opponent makes a mistake. I can name a few common mistakes when playing this sport such as: the ball hits the outside of the bounds, the ball hits the arm or the net, throws the ball away or catches the ball, … Volleyball’s intentions seem quite complicated, but we still love to play the sport. It has helped me improve and exercise my own health. Besides, it also helps me feel more at ease after every stressful class in class. I love playing volleyball because it gave me a lot of fun and memories with my friends. I hope in the future I can join the competitive school club and win lots of awards. I love volleyball. cho mik một đúng nha bạn

11 tháng 12 2021

đó bạn ơi

17 tháng 6 2016

Phần lựa chọn 1 là ko phải đâu nha các bạn

17 tháng 6 2016

Environmental pollution is the status of environmental contamination by chemical, biological ... affect human health, other living organisms.Environmental pollution is caused by humans and human management. 
The main types of pollution : 
- Air pollution : Smoke and dust discharge chemicals into the atmosphere. Examples of toxic gases as carbon monoxide, sulfur dioxide, cloroflorocacbon substances (CFCs) and nitrous oxide are of industrial waste and vehicle 
- Water pollution occurs when surface water flows through the domestic waste, industrial waste water, pollutants in the ground, and groundwater seepage. 
- Soil pollution occurs when soil contaminated with toxic chemicals (concentrations exceed normal limits) by the activities of man as active mining, industrial production and use of chemical fertilizers Study or too much pesticide, ... or leaks from underground storage tanks. Most common types of soil contaminants are hydrocarbons, heavy metals, MTBE, herbicides, pesticides, and chlorinated hydrocarbons . 
- Radioactive Pollution , Noise pollution , Light Pollution ... 
Affect : 
+ For human health : Air pollution can kill many living organisms including humans. Ozone pollution can cause respiratory disease, cardiovascular disease, inflammation of the throat, chest pain, breathlessness. Water pollution causes approximately 14,000 deaths per day, mainly by eating contaminated with untreated water. Chemicals and heavy metals contamination in food and drink can cause cancer. Oil spills can cause itching blisters. Noise pollution causes hearing loss, hypertension, depression, and insomnia., causing serious consequences . 
+ For ecosystem : 
- Sulfur dioxide and nitrogen oxides cause acid rain can reduce soil pH. 
- Contaminated land may become barren, not suitable for crops. This will affect other living organisms in food webs. 
- Smoke and fog reduce sunlight that plants receive to make the process of photosynthesis. 
- Invasive species that can compete and occupied habitat for endangered native species, thus reducing biodiversity. 
CO2 generated from the factories and passing vehicles also increases the greenhouse effect. Earth on a heating up. Gradually destroying the natural resort where it is available. 
Solutions to limit environmental pollution :. 
- Combat desertification and silver color. 
- Natural water treatment contaminated ... 
- Purify air ...