Air pollution is the presence of substances such as smoke, dust, or gaseous waste in the atmosphere, directly affecting the health of humans as well as flora and fauna on Earth.
NATURAL CAUSES
The sources of air pollution stem from various origins, primarily categorized into two main sources: natural causes and human activities.
Natural causes largely stem from natural disasters such as:
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Dust and wind pollution: One of the primary causes of air pollution, carrying smoke, dust, toxic substances, etc., to other places, directly affecting organisms and humans.
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Volcanic eruptions: This phenomenon carries large amounts of ash into the air and spreads it thousands of miles away, along with many harmful gases such as Sulfur Dioxide (SO2), Carbon Dioxide (CO2), etc.
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Forest fires: Both large and small forest fires emit a significant amount of toxic gases into the atmosphere. Other causes such as the decomposition process of dead animals, ocean waves, or natural radiation are also contributing factors to air pollution.
HUMAN CAUSES
Human activities (anthropogenic):
- Industrial and agricultural production activities: A major cause of pollution in many countries worldwide, causing concern for communities. Smoke and dust from factory chimneys and industrial plants in industrial zones carry a lot of emissions such as CO2, CO, SO2, etc., and some other high-concentration substances into the environment. The excessive use of pesticides, fertilizers, or activities such as burning straw, grass, etc., also contribute to air pollution.
- Transportation: This is the second most significant cause after industrial-agricultural activities. Vehicles emit a large amount of exhaust gases into the environment each year. According to IQAir (Swiss Air Quality Technology Company), in 2020, air quality in Vietnam was only average, ranking 21st out of 106 countries with poor air quality.
- Human daily activities: The use of coal, firewood as fuel for cooking also contributes to increased dust and toxic gases in the environment.
- Construction activities: The construction of houses, high-rise buildings, high-rise apartments, or bridges creates heavy air pollution.
We can see that there are many reasons for air pollution, but humans remain the primary cause leading to the current serious situation of air pollution. The indiscriminate discharge of waste without treatment will lead to many serious consequences in the future that we cannot foresee.
The level of pollution seriously harms human health, equivalent to smoking. The harmful effects of air pollution on the environment, fauna, and flora:
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Indirect emissions contribute to the greenhouse effect, causing the Earth to warm up and also contribute to the destruction of the Ozone layer.
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Damage to agriculture due to the appearance of Acid Rain, which kills crops and pollutes water sources.
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Harmful effects on humans: Fine dust in air pollution is the main cause of respiratory diseases, lung cancer, aggravating conditions such as asthma and heart disease. Air pollution is the fourth leading cause of death worldwide, following high blood pressure, smoking, and unhealthy eating habits.
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Air pollution is also one of the causes of cardiovascular diseases, strokes, etc.
Through the above article, we can see the causes and dangers of air pollution to humans. To address this issue, we need to know the solutions to limit emissions, such as treating emissions generated in industrial production activities according to the emission treatment requirements of the Ministry of Natural Resources and Environment.
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