First, we need to understand, what pollution is.
• Pollution is introducing harmful materials into the environment.
• These harmful materials are called pollutants.
• Pollutants can also be created by human activity, such a trash or runoff by factories.
• The pollutants affect the quality of air, water and land.
• Air pollution is most common in large cities where emissions from many different source are connected.
And now, we know what the pollution is, now we need to know, what happen whit Mexicali
• Mexicali is the capital of BC whit 963 thousands citizen.
• Mexicali is closed neighbor wealthy state of California, plays an important demographic, urban, industrial, and business role in the regional economy.