Question

Answers this 3 questions

(1) explain air pollution

(2) and its harmful effect

(3) also list some important measures to reduce air pollution​

Answer 1

Answer:

1. Air pollution is caused by gases and particles emitted to the atmosphere by a variety of human activities, such as the inefficient combustion of fuels, agriculture, and farming. There are also natural sources contributing to air pollution, including particles of soil dust and salt in sea spray.
2. The air pollutant of greatest concern for human health is fine particulate matter. This has a diameter of 2.5 micrometres or less, also known as PM2.5. These fine particles are invisible to the human eye and 40 times smaller than the width of a human hair. They can do a lot of damage to our bodies. These particles are small enough to penetrate deep into our lungs, where they cause inflammation of sensitive lung tissue and can pass into the blood stream, affecting organs like the heart and brain. The WHO estimates that exposure to PM2.5 causes 7 million premature deaths annually.
3. Governments are responsible for providing their citizens with clean air. There are multiple options for national and local governments to improve air quality. Air pollution is a problem that we know how to solve.Governments need to invest in capacity to measure and monitor air pollution by establishing monitoring networks; and ensuring that such networks are properly operated, maintained, and subjected to procedures that guarantee the quality and reliability of air quality measurements