Rain or precipitation that contains elevated levels of hydrogen ions. Elevated hydrogen levels decrease pH levels. Decreased pH level creates an acidic atmosphere. Acid rain results from the combination of fossil fuel emissions and water in the atmosphere. The environmental effects of acid rain include the acidification of lakes and streams, damage [..]

Rain with a pH less than 5.6. Normal pH of precipitation is 5.6.

  Also called acid precipitation or acid deposition, acid rain is precipitation containing harmful amounts of nitric and sulfuric acids formed primarily by sulfur dioxide and nitrogen oxides released [..]

Rain containing relatively high concentrations of acid-forming chemicals that have been released into the atmosphere and combined with water vapor; harmful to the environment.

Pluie acide

The acidity in rain due to gases from internal combustion engines and coal- and oil-burning power plants.

precipitation with high levels of nitric and sulfuric acids. Acid rain can be manmade or occur naturally.

A popular expression for the deposition by rainfall of various airborne pollutants (especially SO2 and NO2) that have harmful effects on vegetation, soils, buildings and other external structures.

Fossil fuels can release chemicals such as sulphur when they are burnt (as petrol is in a car, or coal is in a power station). These chemicals can dissolve in atmospheric water and make rainfall unnat [..]

precipitation heavy with nitric and sulfuric acid. Most of it is generated by sulfur dioxide and nitrogen dioxide (air pollution). Its pH is less than 5.6. Results include fish and plant deaths, corrosion, groundwater pollution, and soil erosion. Its long-term effects are unknown.

refers to the unnatural increase, through human pollution, in the acidity of water precipitation. Most commonly sulphuric and nitric acids formed from by-products of fossil-fuel burning and metal smel [..]

Abnormally acidic rainfall, most often containing dilute concentrations of sulfuric acid or nitric acid.

The combination of sulfur dioxide and nitrogen oxides with water in the atmosphere. This combination produces acidicprecipitation called acid rain. The burning of fossil fuels is a major contributor to acid rain. acid

Rain that has a flamboyantly low pH, due to contact with atmospheric pollutants such as sulphuric oxides.

Acid rain is polluted and harmful to the environment. Acid rain has a low pH. Acid rain may have been a component of the K-T extinction.

Rain which is unusually acidic (pH of less than the natural range of 5 to 6), caused mainly by atmospheric pollution with sulphur dioxide and nitrogen compounds.

Precipitation that has become acidic (low pH) due to the emission of sulfur oxides from fossil fuel-burning power plants. Source: U.S. Department of Energy / Office of Energy Efficiency and Renewable Energy

Rain that has a relatively low pH (i.e., relatively high acidity) because of air pollution.

[noun] Rain with a pH less than 5.

rain that has become more acidic than normal due to pollution. activation energy -

Rain (and snow, fog, dust particles, etc.) containing acids that form in the atmosphere when sulfur dioxides and nitrogen oxides from industrial emissions and automobile exhaust combine with water.

Rain that is acidic due to dissolved gases, such as sulphur dioxide, in the atmosphere. These dissolved gases are present because of the burning of fossil fuels.

Acid rain or acid deposition is a form of precipitation (rain, snow, sleet, or hail) containing high levels of sulfuric or nitric acids ( p H below 5.5-5.6). Acid rain is produced when sulfur dioxide [..]

Rain or any other type of precipitation that is abnormally acidic as a result of air pollution (Lesson 14)

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic (eg. pH < 5.6).

 Also called acid precipitation or acid deposition, acid rain is precipitation containing harmful amounts of nitric and sulfuric acids formed primarily by nitrogen oxides and sulfur oxides released into the atmosphere when fossil fuels are burned. It can be wet precipitation (rain, snow, or fog) or dry precipitation (absorbed gaseous and particulat [..]

Rain that has become acidic due to the emission of sulfur dioxide and nitrogen oxides.

Rain that has become acidic due to the emission of sulfur dioxide and nitrogen oxides.

A term generally used to describe rain (and snow) with acidity lower than pH 5.6 (7 is neutral – the lower the number, the greater the amount of acid – normal rain is about 5.8). The acidity of precipitation in the United States due to acidic gases, other than carbon dioxide, is about 60 percent sulfuric acid, 30 percent nitric acid, and 10 percent [..]

Forms when pollution is combined with water in the atmosphere. When sulfur dioxide and nitrogen oxid&#133;

Acid rain is a generic term used for precipitation that contains an abnormally high concentration of sulfuric and nitric acid. These acids form in the atmosphere when industrial gas emissions combine [..]

Air pollution produced when acid chemicals such as sulfur oxides and nitrogen oxides combine with moisture in the air and fall to the Earth as acidic rain, snow, fog, or mist. The main sources of these pollutants are vehicles and industrial and power-generating plants.

The deposition of acids (sulphuric and nitric) in rain. An environmental problem resulting from certain industrial activities and the burning of petroleum based fuels (trafic exhaust gases).

The precipitation of dilute solutions of strong mineral acids, formed by the mixing in the atmosphere of various industrial pollutants -- primarily sulfur dioxide and nitrogen oxides -- with naturally [..]

Precipitation which has been rendered (made) acidic by airborne pollutants.

(See: acid deposition.)

(See: acid deposition.)

The deposition of airborne acids by rain or snow great distances from where these substances are discharged into the atmosphere by the burning of fossil fuels. Acid rain adversely affects aquatic and terrestrial environments.

is rain mixed mainly with nitric and sulphuric acid, that arise from emissions released during the burning of fossil fuels.

Precipitation which has a pH of less than 5.6.

Acidic Water usually pH 2.5 to 4.5, which Poisons the Ecosystem and adversely Affects Plants, Fishes, and Mammals. It is caused by industrial pollutants, mainly Sulfur Oxides and Nitrogen Oxides, emit [..]

Acidic water usually pH 2.5 to 4.5, which poisons the ecosystem and adversely affects plants, fishes, and mammals. It is caused by industrial pollutants, mainly sulfur oxides and nitrogen oxides, emit [..]

Acids form when certain atmospheric gases (primarily carbon dioxide, sulfur dioxide, and nitrogen oxides) come in contact with water in the atmosphere or on the ground and are chemically converted to [..]

Precipitation that has been rendered (made) acidic by airborne pollutants.

Rain with pH below 5.5.

Natural rainfall that contains nitric and sulfuric acids due to nitrogen oxide (NOx) and sulfur dioxide discharged into the air by industries, power plants, automobiles and other emission sources.

Acid Rain is rain that has been made acidic by certain pollutants released in the air, most commonly caused by human activities. Acid rain creates tiny particles which can easily enter people's l [..]

rain having a pH lower than 5.6 (the pH of natural rainwater), usually caused by sulfuric acid and/or nitric acid from air pollution.

Rain that is especially acidic (pH is less than 5.2). Principal components of acid rain typically include nitric and sulfuric acid. These may be formed by the combination of nitrogen and sulfur oxides [..]

When atmospheric pollutants such as sulphur dioxide and nitrogen oxides mix with water vapour in the air, they are converted to sulphuric and nitric acids. These acids make the rain acidic, hence the [..]

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

Air pollution produced when acid chemicals are incorporated into rain, snow, fog or mist. The “acid” in acid rain comes from sulfur oxides and nitrogen oxides, products of burning coal and other fuels and from certain industrial processes. The sulfur oxides and nitrogen oxides are related to two strong acids: sulfuric acid and nitric acid. When sul [..]

Acidified particulate matter in the atmosphere that is deposited by precipitation onto a surface, often eroding the surface away. This precipitation generally has a pH less than 5 and sometimes much l [..]

falling rain

<biology, plant biology> This is rain which has turned acidic because of the presence of sulphur or nitrogen oxides (both created from burning coal and other fossil fuels) in the atmosphere. Acid rain is a serious environmental problem, it can kill trees and harm plants and animals in lakes and ponds. (09 Oct 1997)

Air pollution produced when acid chemicals are incorporated into rain, snow, fog or mist. The &quot;acid&quot; in acid rain comes from sulfur oxides and nitrogen oxides, products of burning co [..]

Rain containing relatively high concentrations of acid-forming chemicals that have been released into the atmosphere and combined with water vapor; harmful to the environment.

Acid rain forms when the pollutants sulphur dioxide (SO2) and nitrogen oxides (NOx) mix with water to form acids that fall as precipitation (fog, rain or snow). This is referred to as "wet deposi [..]

See Acidification

Forms of precipitation (such as rain, snow or sleet) containing high levels of sulphuric or nitric acids (with pH levels below 5.5–5.6). Also includes dry deposited gases and particles that fall back [..]

the acidic rainfall which results when rain combines with sulfur oxides emissions from combustion of fossil fuels.

Precipitation that becomes acidic due to acid-forming precursors put into the atmosphere by human activities.

rain with a pH of less than 5.6; results from atmospheric moisture mixing with sulphur and nitrogen oxides emitted from burning fossil fuels or from volcanic activity; may cause damage to buildings, monuments, car finishes, crops, forests, wildlife habitats, and aquatic life.

Also called acid precipitation or acid deposition, acid rain is precipitation containing harmful amounts of nitric and sulfuric acids formed primarily by nitrogen oxides and sulfur oxides released into the atmosphere when fossil fuels are burned. It can be wet precipitation (rain, snow or fog) or dry precipitation (absorbed gaseous and particulate [..]

Cloud or rain droplets combine with gaseous pollutants, such as oxides of sulfur and nitrogen, to make falling rain or snow acidic.

Rain that is more acidic than normal because water vapour has condensed ion to particles of sulphate or nitrogen oxide.

Cloud

rain or other forms of precipitation that is unusually acidic.

Generally , precipitation in any form, or dry deposition , with a pH lower than would be expected from natural and artificial causes .

The precipitation of dilute solutions of strong mineral acids, formed by the mixing in the atmosphere of various industrial pollutants -- primarily sulfur dioxide and nitrogen oxides -- with naturally [..]

Any form of precipitation (rain, snow, hail or fog) whose acidity has been increased through the uptake of acid pollutants from the air.

A complex chemical and atmospheric phenomenon that occurs when emissions of sulfur and nitrogen compounds and other substances are transformed by chemical processes in the atmosphere, often far from t [..]

 precipitation, whether rain or snow, where the water has an acidity greater than normal (effectively a pH of less than 5.7). It derives from interaction of water vapour in air with sulfur and nitroge [..]

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

Is caused by emissions of sulphur dioxide and nitrogen oxides. Although natural sources of sulphur oxides and nitrogen oxides do exist, more than 90% of the sulphur and 95% of the nitrogen emissions o [..]

Precipitation that carries to earth sulfuric and nitric acid accumulated from air pollutants.

Acid rain is a generic term used for precipitation that contains an abnormally high concentration of Sulfuric and Nitric acid. These acids form in the Atmosphere when industrial gas emissions combine with water, and have negative impacts on the environment and human health.

Rain containing relatively high concentrations of acid-forming chemicals that have been released into the atmosphere and combined with water vapor; harmful to the environment.

Atmospheric precipitation with an pH below 5.6 to 5.7.

 Precipitation that possesses elevated levels of nitric and sulphuric acids which can have harmful effects on vegetation, aquatic habitats, human health and infrastructure.

A washout of an excessive concentration of acidic compounds in the atmosphere, resulting from chemical pollutants such as sulphur and nitrogen compounds. When deposited these increase the acidity of t [..]

The wet deposition only of acidifying substances from the atmosphere. See also acidifying deposition.

The increased acidity of rainfall which is caused by emissions of sulfur dioxide and nitrogen oxides from power plants and automobiles.

Precipitation which has been rendered (made) acidic by airborne pollutants; Also see Acid deposition

Rain (and snow, fog, dust particles, etc.) containing acids that form in the atmosphere when sulfur dioxides and nitrogen oxides from industrial emissions and automobile exhaust combine with water.