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t. e. Pollution is the introduction of contaminants into the natural environment that cause adverse change. [1] Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring ...
e. The history of environmental pollution traces human-dominated ecological systems from the earliest civilizations to the present day. [1] This history is characterized by the increased regional success of a particular society, followed by crises that were either resolved, producing sustainability, or not, leading to decline. [2][3] In early ...
e. Air pollution is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. [ 1 ] It is also the contamination of the indoor or outdoor environment either by chemical, physical, or biological ...
Ecology portal. v. t. e. Visual pollution is the degradation of the visual environment due to unattractive or disruptive elements that negatively impact the aesthetic quality of an area. It can affect urban, suburban, and natural landscapes. [1] It also refers to the impacts pollution has in impairing the quality of the landscape, formed from ...
Climate change threatens people with increased flooding, extreme heat, increased food and water scarcity, more disease, and economic loss. Human migration and conflict can also be a result. [13] The World Health Organization calls climate change one of the biggest threats to global health in the 21st century. [14]
Ecology portal. v. t. e. A pollutant or novel entity[1] is a substance or energy introduced into the environment that has undesired effects, or adversely affects the usefulness of a resource. These can be both naturally forming (i.e. minerals or extracted compounds like oil) or anthropogenic in origin (i.e. manufactured materials or byproducts).
Cities are also one of the most vulnerable parts of the human society to the effects of climate change, [3] and likely one of the most important solutions for reducing the environmental impact of humans. [4][2][3] The UN projects that 68% of the world population will live in urban areas by 2050. [5] In the year 2016, 31 mega-cities reported ...
t. e. Global dimming is a decline in the amount of sunlight reaching the Earth's surface. [ 2 ][ 3 ] It is caused by atmospheric particulate matter, predominantly sulfate aerosols, which are components of air pollution. [ 4 ] Global dimming was observed soon after the first systematic measurements of solar irradiance began in the 1950s.