Query: If Senator Wong was really serious about her  science she would stop breathing because you inhale air that's got 385  parts per million carbon dioxide in it

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Indoor air quality <=SEP=> Indoor air quality ( IAQ ) is a term which refers to the air quality within and around buildings and structures , especially as it relates to the health and comfort of building occupants .  IAQ can be affected by gases ( including carbon monoxide , radon , volatile organic compounds ) , particulates , microbial contaminants ( mold , bacteria ) , or any mass or energy stressor that can induce adverse health conditions . Source control , filtration and the use of ventilation to dilute contaminants are the primary methods for improving indoor air quality in most buildings . Residential units can further improve indoor air quality by routine cleaning of carpets and area rugs .   Determination of IAQ involves the collection of air samples , monitoring human exposure to pollutants , collection of samples on building surfaces , and computer modelling of air flow inside buildings .   IAQ is part of indoor environmental quality ( IEQ ) , which includes IAQ as well as other physical and psychological aspects of life indoors ( e.g. , lighting , visual quality , acoustics , and thermal comfort ) .   Indoor air pollution in developing nations is a major health hazard . A major source of indoor air pollution in developing countries is the burning of biomass ( e.g. wood , charcoal , dung , or crop residue ) for heating and cooking . The resulting exposure to high levels of particulate matter resulted in between 1.5 million and 2 million deaths in 2000 .

Air pollution <=SEP=> Air pollution occurs when harmful substances including particulates and biological molecules are introduced into Earth 's atmosphere . It may cause diseases , allergies or death in humans ; it may also cause harm to other living organisms such as animals and food crops , and may damage the natural or built environment . Human activity and natural processes can both generate air pollution .   Indoor air pollution and poor urban air quality are listed as two of the world 's worst toxic pollution problems in the 2008 Blacksmith Institute World 's Worst Polluted Places report . According to the 2014 WHO report , air pollution in 2012 caused the deaths of around 7 million people worldwide , an estimate roughly matched by the International Energy Agency .

Respiratory system <=SEP=> The respiratory system ( called also respiratory apparatus , ventilatory system ) is a biological system consisting of specific organs and structures used for the process of respiration in an organism . The respiratory system is involved in the intake and exchange of oxygen and carbon dioxide between an organism and the environment .   In air-breathing vertebrates like human beings , respiration takes place in the respiratory organs called lungs . The passage of air into the lungs to supply the body with oxygen is known as inhalation , and the passage of air out of the lungs to expel carbon dioxide is known as exhalation ; this process is collectively called breathing or ventilation . In humans and other mammals , the anatomical features of the respiratory system include trachea , bronchi , bronchioles , lungs , and diaphragm . Molecules of oxygen and carbon dioxide are passively exchanged , by diffusion , between the gaseous external environment and the blood . This exchange process occurs in the alveoli ( air sacs ) in the lungs .   In fish and many invertebrates , respiration takes place through the gills . Other animals , such as insects , have respiratory systems with very simple anatomical features , and in amphibians even the skin plays a vital role in gas exchange . Plants also have respiratory systems but the directionality of gas exchange can be opposite to that in animals . The respiratory system in plants also includes anatomical features such as holes on the undersides of leaves known as stomata .

Natural gas <=SEP=> Natural gas is a naturally occurring hydrocarbon gas mixture consisting primarily of methane , but commonly including varying amounts of other higher alkanes , and sometimes a small percentage of carbon dioxide , nitrogen , hydrogen sulfide , or helium . It is formed when layers of decomposing plant and animal matter are exposed to intense heat and pressure under the surface of the Earth over millions of years . The energy that the plants originally obtained from the sun is stored in the form of chemical bonds in the gas .   Natural gas is a fossil fuel used as a source of energy for heating , cooking , and electricity generation . It is also used as fuel for vehicles and as a chemical feedstock in the manufacture of plastics and other commercially important organic chemicals . Fossil fuel based natural gas is a non-renewable resource .   Natural gas is found in deep underground rock formations or associated with other hydrocarbon reservoirs in coal beds and as methane clathrates . Petroleum is another resource and fossil fuel found in close proximity to and with natural gas . Most natural gas was created over time by two mechanisms : biogenic and thermogenic . Biogenic gas is created by methanogenic organisms in marshes , bogs , landfills , and shallow sediments . Deeper in the earth , at greater temperature and pressure , thermogenic gas is created from buried organic material .   In petroleum production gas is often burnt as flare gas . The World Bank estimates that over 150 cubic kilometers of natural gas are flared or vented annually . Before natural gas can be used as a fuel , most , but not all , must be processed to remove impurities , including water , to meet the specifications of marketable natural gas . The by-products of this processing include : ethane , propane , butanes , pentanes , and higher molecular weight hydrocarbons , hydrogen sulfide ( which may be converted into pure sulfur ) , carbon dioxide , water vapor , and sometimes helium and nitrogen .   Natural gas is often informally referred to simply as `` gas '' , especially when compared to other energy sources such as oil or coal . However , it is not to be confused with gasoline , especially in North America , where the term gasoline is often shortened in colloquial usage to gas .   Natural gas was used by the Chinese in about 500 BCE ( possibly even 1000 BCE ) . They discovered a way to transport gas seeping from the ground in crude pipelines of bamboo to where it was used to boil salt water to extract the salt , in the Ziliujing District of Sichuan . The world 's first industrial extraction of natural gas started at Fredonia , New York , United States in 1825 . By 2009 , 66 000 km ³ ( or 8 % ) had been used out of the total 850 000 km ³ of estimated remaining recoverable reserves of natural gas . Based on an estimated 2015 world consumption rate of about 3400 km ³ of gas per year , the total estimated remaining economically recoverable reserves of natural gas would last 250 years at current consumption rates . An annual increase in usage of 2 -- 3 % could result in currently recoverable reserves lasting significantly less , perhaps as few as 80 to 100 years .