Definition : Nowadays people's health is threatened by many factors surrounding their life. From the problem of food, disease or more seriously the problem of environmental pollution. Together we will discuss an aspect of environmental pollution that is air pollution.

Environmental pollution is the impact of bad factors around the environment that change the nature of the environment and violate environmental standards, affecting human health and life. Air is a form of matter in nature without which humans would not be able to exist. When the air environment is polluted, human life will be directly affected because then our lungs will inhale extremely toxic gases and affect the human respiratory system.

The air environment is a fairly broad category, there is air everywhere around us, so what would it be like if we had to endure such polluted air and the reasons why the air source was so polluted? To answer the above questions, let's find out the causes and manifestations of air pollution.

định nghĩa ô nhiềm không khí :

-Air pollution is a major change in the composition of the air, mainly due to smoke, dust, vapors or foreign gases introduced into the air, which has a disrepleasure, reduces long-sightedness, causes climate change, causes disease to humans and can also harm other organisms such as animals and food crops.  It can damage the natural environment or build.