Acid Rain

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Acid Rain

Precipitation with low pH, usually resulting from excessive sulfur or nitrogen oxides in the atmosphere. Acid rain is detrimental to both plant and animal life. It has become less common since the 1970s, when governments began to take steps to reduce the sulfur released into the air.
References in periodicals archive ?
Bruce Connery, a biologist at Acadia National Park in Maine, says long-term effects of acid precipitation on amphibians are still up for review.
In the greenhouse he has simulated several levels of acid precipitation.
This effort will complement the work currently being done by the Forest Service and Environmental Protection Agency under the National Acid Precipitation Assessment Program, and will provide more comprehensive data on the impact of acid rain, ozone, and heavy metals on tree growth.
Regens chaired an Environmental Protection Agency Task Force on Acid Precipitation at the beginning of the Reagan administration when ideological battle lines were clearest.
9 million fewer pounds of Carbon Dioxide -- the leading cause of Global Warming -- 114,286 fewer pounds of Sulfur Dioxide -- the leading cause of Acid Rain -- 38,462 fewer pounds of Nitric Dioxide -- the leading cause of Smog and Acid Precipitation -- 780 passenger cars removed from the road this year.
With the National Acid Precipitation Assessment Program's completion this year, EPA will phase out about $18 million in acid-rain programs.
Nitric oxide, on the other hand, contributes to acid precipitation.
One indication of the shift toward studying the effects of a wider range of pollutants is evident in recent research sponsored by the National Acid Precipitation Assessment Program (NAPAP).
3 million grams of Nitric Dioxide -- the leading cause of Smog and Acid Precipitation -- 128 passenger cars removed from the road this year.
These conclusions are contained in an interim assessment of the causes and effects of acid rain, issued by the National Acid Precipitation Assessment Program (NAPAP), the umbrella organization coordinating federal acid rain research.
5 million grams of Nitric Dioxide * the leading cause of Smog and Acid Precipitation -- 1,970,802 lbs of Coal Not Burned per Year -- 369 passenger cars removed from the road this year.
In 1979, when a small group of scientistshelped draft the original plan for what became the federal government's National Acid Precipitation Assessment Program (NAPAP), the focus was on studying the causes and effects of acid rain.