Environment of Pakistan
The Air pollution is the release of chemicals and particulates into the atmosphere. Common gaseous pollutants include carbon monoxide, sulfur dioxide, chlorofluorocarbons (CFCs) and nitrogen oxides produced by industry and motor vehicles. Photochemical ozone and smog are created as nitrogen oxides and hydrocarbons react to sunlight. Particulate matter, or fine dust is characterized by their micrometre size PM to PM. The air in Karachi is rapidly polluted by automobile smoke, especially Rickshaws and Buses, industrial emissions, open burning of garbage, house fires, and other particles but the government and environment organizations seems non-serious to tackle the issue timely.
The two-stroke engines on rickshaws and motorcycles are one of the major polluters of air in Karachi and the rest of Pakistan. The two-stroke engines as well as defective or unturned vehicles are major polluters with carbon dioxide emissions. Two-stroke engines as well as defective vehicles using substandard lubricant are major emitters of sulfur dioxide and smoke. Automobiles operating on compressed natural gas and liquefied petroleum gas are major air polluters.
Environmental issues in Fresno, California
Smog, carbon dioxide, and other greenhouse gases such as methane are vital contributors to global warming and the cause of various health issues. To understand the environmental issue of air pollution within the Central Valley but specifically Fresno, it is best to understand where Fresno is geographically located. Fresno is a region surrounded by mountain ranges and acts as a pool of emissions, trapped in the Central Valley by warm air that comes from its roughly 3.5 million residents. Because of this, Fresno’s air quality is considered to be the worst in the region of the Central Valley and among the worst in the U.S.Two types of air pollution dominate in the U.S.: ozone and particle pollution. These two pollutants threaten the health and the lives of millions of Americans. Thanks to the Clean Air Act, the U.S. has far less of both pollutants now than in the past. Still, more than 166 million people live in counties where monitors show unhealthy levels of one or both—meaning the air a family breathes could shorten life or cause lung cancer.