Compose a 1250 words assignment on renewable fuel standard program. Needs to be plagiarism free! The evaporation of fuel itself and the by-products that are released due to burning through the exhaust are major air pollutants. Unfortunately, inside an automobile engine, fuel undergoes incomplete combustion and as a result, unburned hydrocarbons, oxides of nitrogen, carbon monoxide, carbon dioxide and compounds of sulphur are released, which are extremely dangerous to mankind.

Unburned hydrocarbons are highly toxic and they contribute to the formation of ozone at the ground level which causes coughing, choking, irritation in the respiratory system and reduced lung capacity. The nitrogen in the fuel burns at high temperature and pressure in the presence of oxygen from air and turns into various oxides of nitrogen which are very strong irritants for lungs and also weaken the immune system against respiratory infections. Carbon monoxide blocks the transport of oxygen to the brain, heart and other vital organs of the body. It has a strong affinity for hemoglobin found in the blood and readily reacts with it, thus preventing the oxygen to bind with hemoglobin (Rao, 1989).

Carbon dioxide which is a natural component of the earth’s ecosystem and although it is an end product of complete combustion, it is being regarded as an air pollutant. Its accumulation causes the greenhouse effect, ultimately causing global warming. Some fuels like diesel contain sulphur compounds which produce sulphur dioxide gas during combustion. It is a strong lung irritant and also is a major contributor to the acid rain formation and falls down on earth in the form of sulphuric acid which greatly damages animals and crops and causes skin diseases (Automobile Emissions: An Overview, 2011)

To prevent all such disasters to happen, many organizations are participating in developing awareness and making standards that are environmentally friendly. Among them is the U.S. Environmental Protection Agency (EPA) who is constantly trying to make such standards and regulations which can lessen the effects of automobiles exhaust on human health and on the environment. It tries to purpose such laws which are applicable in real terms, not causing any&nbsp.problem or applying any severe restriction on the population and at the same time are environment-friendly.&nbsp.