Pollutant - Wikipedia
网页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.
Pollution - National Geographic Society
网页2024年3月6日 · Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutants. Pollutants can be natural, such as volcanic ash. They can also be created by human activity, such as trash or runoff produced by factories. Pollutants damage the quality of air, water, and land.
Air quality, energy and health - World Health Organization (WHO)
网页Pollutants with the strongest evidence for public health concern include particulate matter (PM), carbon monoxide (CO), ozone (O 3), nitrogen dioxide (NO 2) and sulfur dioxide (SO 2). Health problems can occur as a result of both short- and long-term exposure to these various pollutants.
Pollution | Definition, History, Types, & Facts | Britannica
网页2024年9月11日 · Pollution, addition of any substance or form of energy to the environment at a rate faster than it can be dispersed or stored in a harmless form. The major kinds of pollution are usually classified by environment and include air, water, and land pollution. Learn more about the history of pollution.
Air pollution | Effects, Causes, Definition, & Facts | Britannica
网页6 天之前 · Air pollution, release into the atmosphere of various gases, finely divided solids, or finely dispersed liquid aerosols at rates that exceed the natural capacity of the environment to dissipate and dilute or absorb them. High concentrations can cause undesirable health, economic, or aesthetic effects.
Air Pollution Facts, Causes and the Effects of Pollutants in the Air - NRDC
网页2023年10月31日 · What is air pollution? Air pollution refers to the release of pollutants into the air—pollutants that are detrimental to human health and the planet as a whole. According to the World Health...
The six criteria air pollutants | Description, List, Health Effects ...
网页Standards for the six criteria air pollutants were established by the U.S. Environmental Protection Agency (EPA) to protect public health and the environment. The pollutants are sulfur dioxide, nitrogen dioxide, particulate matter, carbon monoxide, ozone, and lead.
Air Pollution - National Geographic Society
网页2024年3月6日 · Air pollution consists of chemicals or particles in the air that can harm the health of humans, animals, and plants. It also damages buildings. Pollutants in the air take many forms. They can be gases, solid particles, or liquid droplets. Sources of Air Pollution.
Air pollution - World Health Organization (WHO)
网页2024年7月29日 · Air pollution is contamination of the indoor or outdoor environment by any chemical, physical or biological agent that modifies the natural characteristics of the atmosphere. Household combustion devices, motor vehicles, industrial facilities and forest fires are common sources of air pollution.
Pollution - Wikipedia
网页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 ...
跳至内容