Water Pollution Water pollutionis the contamination of natural water bodies by chemical, physical,radioactiveorpathogenic microbialsubstances. Adverse alteration of water quality presently produces large scale illness and deaths, accounting for approximately 50 million deaths per year worldwide, most of these deaths occurring in Africa and Asia. InChina, for example, about 75 percent of the population (or 1.1 billion people) are without access to unpolluted drinking water, according to China's own standards.[ Widespread consequences of water pollution uponecosystemsinclude species mortality,biodiversityreduction and loss ofecosystem services. Some consider that water pollution may occur from natural causes such as sedimentation from severe rainfall events; however, natural causes, includingvolcanic eruptionsand algae blooms from natural causes constitute a minute amount of the instances of world water pollution. The most problematic of water pollutants are microbes that induce disease, since their sources may be construed as natural, but a preponderance of these instances result from human intervention in the environment orhuman overpopulationphenomena.

Water pollutionis the contamination ofwaterbodies (e.g.lakes,rivers,oceans,aquifersandgroundwater). This form ofenvironmental degradationoccurs whenpollutantsare directly or indirectly discharged into water bodies without adequatetreatmentto remove harmful compounds.Water pollution affects the entire biosphere plants and organisms living in thesebodies of water. In almost all cases the effect is damaging not only to individualspeciesand population, but also to the naturalbiological communities. Air Pollution

Air pollutionis a mixture of solid particles and gases in theair. Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles. Ozone, a gas, is a major part ofair pollutionin cities. When ozone formsair pollution, it's also called smog.

Air pollutionis the introduction ofparticulates,biological molecules, or other harmful materials into theEarth's atmosphere, possibly causing disease, death to humans, damage to other living organisms such as food crops, or thenaturalorbuilt environment.The atmosphere is a complex natural gaseous system that is essential to support life on planetEarth.Stratosphericozone depletiondue to air pollution has been recognized as a threat to human health as well as to the Earth'secosystems.Indoor air pollution and urban air quality are listed as two of the world's worst toxic pollution problems in the 2008Blacksmith InstituteWorld's Worst Polluted Places report.[1]According to the 2014WHOreport, air pollution in 2012 caused the deaths of around 7 million people worldwide.[2]