What Are Acid Rains?

Many acids result from the combination of a nonmetal oxide with water.Water can be found in nature, the oxides can be dumped by human activity, especially the burning of fossil fuels. This is how acid rains result: rains filled with acids. The main causes are the nitrogen and sulfur oxides, t... [ read more >> ]

Czech larch forest destroyed by acid rains, July, 2006

Marble surfaces exposed to rain develop a rough "sugary" texture because the calcite grains are loosened as the edges dissolve in the rain water. Column capital volute, Jefferson Memorial, Washington, D.C.

Image comment: Marble surfaces exposed to rain develop a rough "sugary" texture because the calcite grains are loosened as the edges dissolve in the rain water. Column capital volute, Jefferson Memorial, Washington, D.C.

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Marble surfaces exposed to rain develop a rough "sugary" texture because the calcite grains are loosened as the edges dissolve in the rain water. Column capital volute, Jefferson Memorial, Washington, D.C.
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