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Sulfur is one of the constituents of many proteins, vitamins and hormones. It recycles as in other biogeochemical cycles.
Additional recommended knowledge
The essential steps of the sulfur cycle are:
These are often termed as follows:
Human impact on the sulfur cycle is primarily in the production of sulfur dioxide (SO2) from industry (e.g. burning coal) and the internal combustion engine. Sulfur dioxide can precipitate onto surfaces where it can be oxidized to sulfate in the soil (it is also toxic to some plants), reduced to sulfide in the atmosphere, or oxidized to sulfate in the atmosphere as sulfuric acid, a principal component of acid rain.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Sulfur_cycle". A list of authors is available in Wikipedia.|