Soil pollution is an example of our negative impacts on the environment. Due to modern farming practices and the abuse of chemical pesticides, the soil is losing more and more crucial minerals and microorganisms in it. As a result, the quality of soil is rapidly degraded. Arable land will turn into desert or be lost to erosion and water logging. Furthermore, the soil is also polluted by improper disposal of waste or heavy metals from factories and power plants. These substances will enter the waterways and then our food chain, which gradually do harm to our health. To solve the problem, plants must build proper waste disposal systems and people should avoid using harmful chemicals in farming.

Bien Hoa is an industrial city and the capital of Dong Nai province on the outskirts of Ho Chi Minh City, which is Vietnam’s large southern metropolis. It is classified as a grade one city and is a major traffic hub in the southern economic region. It is estimated that over 1 million people live in the city of Bien Hoa. With such a large population, it is understandable that the environmental pollution situation is currently very complicated. During the month of November, air quality is classed as moderate with an AQI US figure of 93. Readings of PM2.5 are 32.2 µg/m³, PM10 21 µg/m³, NO2 13µg/m³ and O3 16 µg/m³. The annual average being 43 µg/m³.