Raw sewage is a major pollutant in some countries primarily due to inadequate sanitation infrastructure and limited access to wastewater treatment facilities. In many developing nations, insufficient investment in public health systems leads to the direct discharge of untreated sewage into water bodies, causing severe environmental and health issues. Conversely, developed countries typically have established sanitation systems and regulations that ensure wastewater is treated before being released, significantly reducing the risks associated with sewage pollution. Additionally, public awareness and resources devoted to environmental protection in developed nations contribute to more effective management of sewage waste.
treated and untreated sewage
Aircraft
Aircraft
Carbon monoxide is a major pollutant in urban areas.
Photochemical
In under developed countries. Resistant strains (Tuberculosis) is on increase in developing countries.
There's no difference on this statistical subject among developed, underdeveloped and emerging countries.
The major air pollutants found in coal are carbon dioxide and methane.
Vehicles, litter and sewage.
Three major religions revere Jerusalem, but only one religion actually developed there: Judaism. Christianity and Islam came much later, and developed in other countries (Christianity in Greece and Islam in Saudi Arabia).
Particulates
Particulates