Pollutant - Wikipedia
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).
Air quality, energy and health - World Health Organization (WHO)
Pollutants with strong empirical evidence for public health concern include particulate matter (PM), carbon monoxide (CO), ozone (O3), nitrogen dioxide (NO2) and sulphur dioxide (SO2). Health problems can occur as a result of both short- and long-term exposure to these various pollutants.
POLLUTANT中文(简体)翻译：剑桥词典 - Cambridge Dictionary
uk / pəˈluː.t ə nt / us / pəˈluː.t̬ ə nt / Add to word list. a substance that pollutes. 污染物，污染物质. Sulphur dioxide is one of several pollutants that are released into the atmosphere by coal-fired …
pollutant是什么意思_pollutant的翻译_音标_读音_用法_例句_爱词 …
英 [pəˈluːtənt] 美 [pəˈluːtənt] 释义. n. 污染物. 词态变化. 复数: pollutants; 实用场景例句. 全部. 污染物. A steady stream of California traffic clogs the air with pollutants. 加利福尼亚川流不息的车流使空气中充斥着污染物。 柯林斯高阶英语词典. Arsenic is widely distributed in nature and also an important environmental pollutant. 砷广泛分布于自然界,而且是一种重要的环境污染物. 期刊摘选.
Pollution | Definition, History, Types, & Facts | Britannica
2024年10月17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
3 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.
Pollution - Wikipedia
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 ...
Pollution - Education | National Geographic Society
4 天之前 · 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.
Ambient (outdoor) air pollution - World Health Organization …
2024年10月24日 · Air pollution is one of the greatest environmental risks to child health. In 2019, 99% of the world’s population was living in places where the WHO air quality guidelines levels were not met. The combined effects of ambient air pollution and household air pollution are associated with 6.7 million premature deaths annually.
Air quality, energy and health - World Health Organization (WHO)
Pollutants not only severely impact public health, but also the earth’s climate and ecosystems globally. Most policies to reduce air pollution offer a “win-win” strategy for both health and climate.