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The Sulfur Cycle

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Karen Parga

on 21 November 2012

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Transcript of The Sulfur Cycle

The Sulfur Cycle By Vanessa Sanchez and Karen Parga
Period 3 Sulfur Sulfur is a minor but essential component of proteins, playing a vital role in organisms and the environment. Sulfur Dioxide Volcanoes, Geologic uplifting,
Upwelling in ground water Mining and fossil fuel burning definition More About Sulfur how it affects the environment sulfur also cycles Sulfate ATMOSPHERE Acid Precipitation Biogenic Sulfur
Sea Salt Sulfate Inorganic Sulfur Reduced Sulfur Uptake by
plants Decomposition Bacterial Interface Sedimentation Iron sulfides

Coal, oil, ores Seafloor Vents The Sulfur Cycle Sulfur is the tenth most abundant element in the universe. It is a brittle, yellow, tasteless, and odorless non-metallic element. It comprises many vitamins, proteins, and hormones that play critical roles in both climate and in the health of various ecosystems. The majority of the Earth's sulfur is stored underground in rocks and minerals, including as sulfate salts buried deep within ocean sediments. a nonmetallic element that occurs either free or combined especially in sulfides and sulfates, is a constituent of proteins, exists in several allotropic forms including yellow orthorhombic crystals, resembles oxygen chemically but is less active and more acidic The sulfur cycle contains both atmospheric and terrestrial processes. Within the terrestrial portion, the cycle begins with the weathering of rocks, releasing the stored sulfur The sulfur then comes into contact with air where it is converted into sulfate (SO4). The sulfate is taken up by plants and microorganisms and is converted into organic forms; animals then consume these organic forms through foods they eat, thereby moving the sulfur through the food chain Then... As organisms die and decompose, some of the sulfur is again released as a sulfate and some enters the tissues of microorganisms.
There are also a variety of natural sources that emit sulfur directly into the atmosphere, including volcanic eruptions, the breakdown of organic matter in swamps and tidal flats, and the evaporation of water. After... Now Let's See It
in Action... Positive and Negative Effects All living things need sulfur, and therefore the sulfur cycle as well. However, human activities influence the rates and character of certain aspects of the sulfur cycle in important ways, sometimes causing substantial environmental damages including: Acid Rain and Acid Mine Drainage this is how it looks Sulfur is important for the functioning of proteins and enzymes in plants, and in animals that depend upon plants for sulfur. Plants absorb sulfur when it is dissolved in water. Animals consume these plants, so that they take up enough sulfur to maintain their health. Most of the earth's sulfur is tied up in rocks and salts or buried deep in the ocean in oceanic sediments. Sulfur can also be found in the atmosphere. It enters the atmosphere through both natural and human sources. Natural resources can be for instance volcanic eruptions, bacterial processes, evaporation from water, or decaying organisms. When sulfur enters the atmosphere through human activity, this is mainly a consequence of industrial processes where sulfur dioxide (SO2) and hydrogen sulphide (H2S) gases are emitted on a wide scale. Why Sulfur is Important... Cool, huh? Cites Used http://www.lenntech.com/sulphur-cycle.htm#ixzz29LCHEnVP http://science.jrank.org/pages/6600/Sulfur-Cycle.html#ixzz29Jybz3gA http://www.lenntech.com/periodic/elements/s.htm#ixzz29K4mmeRl
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