Writing: Problems & Solutions
Write about the following topic:
In many parts of the world, water sources are becoming more polluted. What are the consequences of this problem? What can be done to combat it?
Give reasons for your answers and include any relevant examples from your own knowledge or experience.
Write at least 250 words.
Air pollution is always accompanied by civilizations. Pollution dates back to prehistoric times, when humans created the first fires. According to a 1983 article in Science, soot found on ceilings of prehistoric caves provides ample evidence of the high levels of pollution associated with the ventilation of large fires. Metal forging appears to be a major turning point in creating significant levels of outdoor air pollution. Glacial samples in Greenland show an increase in pollution associated with Greek, Roman and Chinese metal production, burning of coal and wood, and adding the appearance of more smoke and dust concentrated in one. areas that make cities a major source of pollution. The Industrial Revolution created a lot of chemicals and waste to dump the water that is being used to supply the water. King Edward I of England announced a ban on coal burning in 1272, after coal smoke became an issue. through the ecological limits of the soil-living biomes.
The soil environment is the habitat of humans and most terrestrial organisms, and is the foundation for civil, industrial and human constructions. Land is a valuable resource, people use land resources in agricultural production to ensure food supply for humans. But with the current pace of population growth and industrial development and urbanization, the cultivated land area has been narrowed down, the land quality is increasingly degraded, the average land area. per capita decreased. Only in Vietnam, the reality of land resource degradation is very worrying and serious. Water pollution is a negative variation of the physical – chemical – biological properties of water. , with the appearance of foreign substances in liquid and solid form, making water sources toxic to humans and organisms. Reducing the diversity of aquatic organisms. In terms of the speed of transmission and the scale of impacts, water pollution is a more worrying issue than soil pollution.
Polluted water is due to eutrophication that occurs mainly in freshwater areas, coastal areas, and enclosed seas. Due to the excessive amount of mineral salts and organic matter content, the biomes in the water cannot be assimilated. As a result, the oxygen content in the water decreases dramatically, toxic gases increase, increasing turbidity of the water, causing degradation of water bodies. In the oceans the main cause of pollution is oil spills.
Water pollution is caused by chemicals, wastes discharged from factories and factories into rivers, seas and oceans without any treatment; the excess chemical fertilizers and pesticides in the field soak into groundwater and pond water; Domestic wastewater is discharged from riverside residential areas causing serious pollution, affecting the health of people and creatures in the area. These types of toxic substances are sent back to the sea and are the cause of the “red tide” phenomenon, causing heavy pollution and death of organisms living in the aquatic environment. In recent years, there has been a phenomenon called sea desertification caused by pollution. We need to fix this quickly to protect marine ecosystems Air pollution is the presence of a foreign substance or a significant change in the composition of the air, making the air not clean. or cause unpleasant odors, impaired vision when looking far away due to dust.
Currently, atmospheric pollution is a hot news issue of the whole world, not just one country. The atmospheric environment is undergoing many obvious changes and has negative effects on humans and organisms. Air pollution comes from both humans and nature. Every year, people exploit and use billions of tons of coal, oil, and gas. At the same time, a large amount of different wastes such as domestic waste, waste from factories and factories are discharged into the environment, making the content of harmful gases increase rapidly.
Pollution from motorbikes is also a worrying type of air pollution.
Pollution of the atmospheric environment creates suffocation and “fog”, causing many diseases for people. It also produces acid rains that destroy forests and fields. The most worrying thing is that humans release toxic gases such as: CO2 causing the greenhouse effect. According to the study, the important gas causing the greenhouse effect is carbon dioxide (CO2), it contributes 50% to the greenhouse effect, methane (CH4) is 13%, nitrogen 5%, CFC is 22%, steam stratosphere water is 3% …
If the greenhouse effect cannot be prevented, in the next 30 years the sea level will rise from 1.5 to 3.5 m (Stepplan Keckes). It is likely that CO2 energy will double by the first half of next century. This will accelerate the rapid warming of the Earth. The average temperature of the Earth will increase about 3.60 ° C (G.I.Plass), and each decade will increase 0.30 ° C. T