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Fiche 1,  Justifications,  Anglais

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The term "acid precipitation" is used to specifically describe wet forms of acid pollution that can be found in rain, sleet, snow, fog, and cloud vapor. ... Precipitation is considered to be acidic when its pH falls below 5.6 (which is 25 times more acidic than pure distilled water).  1, fiche 1, Anglais, - acid%20precipitation

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The term "acid rain" can refer to all types of precipitations or it can refer to the acid precipitation in the form of rain only.  5, fiche 1, Anglais, - acid%20precipitation

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acid rain : term standardized by Environment Canada and the Translation Bureau for use in the Air Pollutant Emission Inventory Report.  5, fiche 1, Anglais, - acid%20precipitation

Fiche 1,  Justifications,  Français

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[...] pluie, neige, neige fondante, grêle ou brouillard, [...] dont le pH est inférieur à 5,6.  1, fiche 1, Français, - pr%C3%A9cipitations%20acides

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Le terme «pluies acides» peut faire référence à toutes les formes de précipitations ou alors aux précipitations acides sous forme de pluie seulement.  3, fiche 1, Français, - pr%C3%A9cipitations%20acides

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pluies acides : terme normalisé par Environnement Canada et le Bureau de la traduction dans le cadre de l'Inventaire des émissions de polluants atmosphériques.  3, fiche 1, Français, - pr%C3%A9cipitations%20acides

Fiche 1,  Justifications,  Espagnol

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Precipitación en la atmósfera de las emisiones industriales de contaminantes ácidos, como óxidos de azufre y de nitrógeno, óxidos metálicos, etcétera.  3, fiche 1, Espagnol, - precipitaci%C3%B3n%20%C3%A1cida

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Caída (deposición) de ácidos presentes en la atmósfera a través de la lluvia, niebla y nieve [...] principalmente ácido sulfúrico y ácido nítrico, se disuelven en las gotas de agua que forman las nubes y en las propias gotas de agua de lluvia, depositándose en el suelo.  4, fiche 1, Espagnol, - precipitaci%C3%B3n%20%C3%A1cida

Fiche 2,  Justifications,  Anglais

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The potential is high for widespread environmental degradation, from acid rain and other pollutant deposition, because hydrogen ion concentration(acid, H+) in the aquatic environment is a critical factor controlling most chemical reactions.  1, fiche 2, Anglais, - pollutant%20deposition

Fiche 2,  Justifications,  Français

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Les précipitations n'ont sans doute qu'une influence faible sur l'extension de la pollution atmosphérique. Nous connaissons mal leur rôle sur les retombées des polluants au sol.  1, fiche 2, Français, - retomb%C3%A9es%20des%20polluants

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

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All of the conversion processes involved in acid precipitation require oxidizing substances such as hydrogen peroxide, ozone, and hydroxyl radicals. The production of these compounds is directly related to the reactive hydrocarbon pollutant class.  1, fiche 3, Anglais, - reactive%20hydrocarbon%20pollutant

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Fiche 4,  Justifications,  Anglais

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... NO_x can exert three different kinds of environmental effect. First, NOx is a direct pollutant; second, NOx can produce indirect pollutant effects by acting in combination with other pollutants to produce ozone and photochemical smog; and third, NOx from all sources, including motor vehicles, contributes to Canada's acid rain problem.  1, fiche 4, Anglais, - indirect%20pollutant

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Fiche 5,  Justifications,  Anglais

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... plants often react differently to pollutant mixtures than to individual pollutants. For these reasons it is desirable to consider the overall pollutant background of a region when assessing effects of acid rain.  1, fiche 5, Anglais, - pollutant%20mixture

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Fiche 6,  Justifications,  Anglais

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... plants often react differently to pollutant mixtures than to individual pollutants. For these reasons it is desirable to consider the overall pollutant background of a region when assessing effects of acid rain.  1, fiche 6, Anglais, - individual%20pollutant

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Fiche 7,  Justifications,  Anglais

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This is not to question the possible importance of acid rain effects on plants, but rather to emphasize that if, in earlier decades, gas pollutants had been more widely dispersed and at low concentrations, producing only ’invisible’ effects on plants, then it is unlikely that the understanding of gas pollutant effects would have been as advanced as it is today.  1, fiche 7, Anglais, - invisible%20effect

Fiche 7,  Justifications,  Français

Fiche 7,  Justifications,  Espagnol