The Importance of a Healthy Respiratory System
1. Air Pollutants
An air pollutant is a substance in the air that can have adverse effects on humans and the ecosystem. The substance can be solid particles, liquid droplets, or gases. A pollutant can be of natural origin or man-made. -Carbon Monoxide (CO)
Carbon Monoxide is a colourless, odourless, toxic yet non-irritating gas. It is a product by incomplete combustion of fuel such as natural gas, coal or wood. A major source of carbon monoxide is from vehicle exhausts. -Oxides of Nitrogen (NOx)
Nitrogen oxides, particularly nitrogen dioxide, are expelled from high temperature combustion, and are also produced during thunderstorms by electric discharge.
It is harmful to the ozone layer and is emitted by gases which are released from air conditioners, refrigerators, aerosol sprays, etc. CFC's on being released into the air rises to atmosphere. Here they come in contact with other gases and damage the ozone layer. This allows harmful ultraviolet rays to reach the earth's surface. This can lead to skin cancer, disease to the eyes and can even cause damage to plants.
-Sulfur Oxides (SOx)
Sulfur oxides are produced by volcanoes and in various industrial processes. Coal and petroleum often contain sulfur compounds, and their combustion generates sulfur dioxide which causes acid rain.
2. Diseases of the Respiratory System
Asthma causes breathing difficulties due to inflammation of bronchi and bronchioles, this causes a restriction in the airflow into the alveoli. Air pollution, tobacco smoke, factory fumes, exercise, chemicals and medications are some common asthma triggers.
Lung cancer is often associated with smoking, but the disease can affect non-smokers as well. Like all cancers, lung cancer is caused by the uncontrolled growth of abnormal cells. Carcinogen released from factories, vehicles and cigarette smoking can cause cancer....
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