Pure oxygen can be deadly. Our blood has evolved to capture the oxygen we breathe in and bind it safely to the transport molecule called haemoglobin. If you breathe air with a much higher than normal O2 concentration, the oxygen in the lungs overwhelms the blood's ability to carry it away.
Over time, breathing fine particles in the air increases the chances of developing chronic obstructive lung disease (COPD), chronic bronchitis, cardiovascular disease, or lung cancer.
Air pollution kills 6.7 million people every year, 3.2 million of whom die from household air pollution.
Air is an essential element in human survival, and the fact that this air is pure is an exponential benefit to that survival. For the best quality of life, the air that we breath must be the purest as possible because air nourishes with oxygen the lungs, the blood and, consequently, the rest of the organs.
Polluted air can cause difficulty breathing, flare-ups of allergy or asthma, and other lung problems. Long-term exposure to air pollution can raise the risk of other diseases, including heart disease and cancer.
91% of the World's Population Are Breathing in Polluted Air Every Day. According to the World Health Organization (WHO), it estimates that at least 9 out of 10 people across the world are living in places with polluted air.
Vehicle emissions, fuel oils and natural gas to heat homes, by-products of manufacturing and power generation, particularly coal-fueled power plants, and fumes from chemical production are the primary sources of human-made air pollution.
If there is no air means no oxygen. If there were no oxygen molecules in the air, there would be fewer particles for light to emit. All plants and animals need oxygen to carry out various metabolic activities. Without oxygen, we cannot breathe and life on Earth will end.
Time is very important when an unconscious person is not breathing. Permanent brain damage begins after only 4 minutes without oxygen, and death can occur as soon as 4 to 6 minutes later.
We need 10 times more air than we do food and water.
Without food, human beings can stay alive for days. Without water we can stay alive for several days, but without air one cannot survive for more than a few minutes. This is why air is the most important thing in life.
Effects On The Environment
Air pollution particles eventually fall back to Earth. Air pollution can directly contaminate the surface of bodies of water and soil. This can kill crops or reduce their yield. It can kill young trees and other plants.
Data suggests that the average human loses 2.2 years of life due to the current levels of air pollution. Added up that accounts to 17 billion years lost. Air pollution is the largest environmental or external threat to human health.
Particulate air pollution is the single greatest threat to human health globally.
WHO data show that almost all of the global population (99%) breathe air that exceeds WHO guideline limits and contains high levels of pollutants, with low- and middle-income countries suffering from the highest exposures. Air quality is closely linked to the earth's climate and ecosystems globally.
For example, in the United States, tobacco smoke is responsible for almost half a million deaths every year, but air pollution is only responsible for about 60,000. This is likely because air pollution in the U.S. is typically too low to cause as many health issues as cigarette smoke.
Breathing in fresh air can help to reduce airborne illness and infection. This is because bacteria and viruses have a reduced chance of survival in fresh air. This is in comparison to warm, humid, indoor environments in which they thrive.
After five to ten minutes of not breathing, you are likely to develop serious and possibly irreversible brain damage. The one exception is when a younger person stops breathing and also becomes very cold at the same time. This can occur when a child is suddenly plunged into very cold water and drowns.
You can survive for 3 Minutes without air (oxygen) or in icy water. You can survive for 3 Hours without shelter in a harsh environment (unless in icy water) You can survive for 3 Days without water (if sheltered from a harsh environment) You can survive for 3 Weeks without food (if you have water and shelter)
You can survive three minutes without breathable air (unconsciousness), or in icy water. You can survive three hours in a harsh environment (extreme heat or cold). You can survive three days without drinkable water. You can survive three weeks without food.
After 10 minutes without oxygen , brain death occurs. Brain death means there is no brain activity. A person needs life support measures like a mechanical ventilator to help them breathe and stay alive.
The longest instance of someone holding their breath without inhaling pure oxygen beforehand is 11 minutes and 34 seconds. However, most people can only safely hold their breath for 1 to 2 minutes. The amount of time you can comfortably and safely hold your breath depends on your specific body and genetics.
In most cases the human brain would suffer irreversible brain damage after 3 minutes without oxygen.
Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.
Air pollution is caused by solid and liquid particles and certain gases that are suspended in the air. These particles and gases can come from car and truck exhaust, factories, dust, pollen, mold spores, volcanoes and wildfires. The solid and liquid particles suspended in our air are called aerosols.
Evidence from Greece shows that the problems of polluted air outdoors were being documented at least 2400 years ago.