Biogeochemical:
Sulfur Cycle
By: Diana Ramirez, Catalina
Calderon, Joanna Lopez, &
Yamilex Milian
What is sulfur?
A non metallic element that can be in different
forms, usually a yellow solid, burns in only blue
flame, and suffocating odor.
It is found in proteins, amino acid cysteine,
enzymes, and gives a distinctive order to many
substances.
Sulfur cycle steps:
o Sulfur is released into atmosphere as sulfur
dioxide by volcanic eruptions, bacterial-byproduct sea spray releases, human activity of
burning fossil fuels.
o The sulfuric acid falls back to earth through
rain in terrestrial & aquatic.
o Sulfur falls to bottom of ocean and geological
activity mixes the minerals and ends up back at
the beginning of the cycle.
In the process, acid
precipitation can occur.
Where acid rain appears in the cycle?
• Compounds return to land, from the atmosphere, as dry
particles or dissolved in the precipitation, such as rain or snow.
• Winds can propel these compounds which makes it an
international problem.
What’s wrong with acid rain?
• Too much sulfuric acid in rain is the
main cause of acid rain, which lowers
pH of soils, lakes and rivers.
• Normal rain fall has pH of 5.6
• Acid Rain has pH of below 5.6
Effects of acid rain
• Acid damages productivity
of plants and the organisms
in ecosystems.
• Damage to fish aquatic
organisms such as most
fish eggs do not hatch.
• Soil is damaged because their microbes are
unable to tolerate low pH and are killed.
Wallpapers
http://www.eoi.es/blogs/ianamalaga/2012/01/21/envir
onmental-and-natural-resource-management-cycles/
http://www.jstor.org/discover/10.2307/2834920?uid=3
739560&uid=2&uid=4&uid=3739256&sid=47698737909
847
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http://www.sublimelight.com/index.php/2007/06/14/smoke-part-2-how-toprocess-smoke-photographs/
Images:
http://water.me.vccs.edu/courses/env211/lesson17_pri
nt.htm
Sources:
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http://weirdsciencekids.com/AcidRainExperiment.html
http://yoebaree.hubpages.com/hub/The-acid-rain-andits-effect-to-the-fauna
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http://www.eoi.es/blogs/ianamalaga/2
012/01/21/environmental-and-naturalresource-management-cycles/
http://www.ncsu.edu/chemistry/franze
n/public_html/Poland/Poznan08a/Sulfu
r_Cycle.pdf
http://www.cliffsnotes.com/study_guid
e/The-Sulfur-Cycle.topicArticleId23791,articleId-23787.html
http://www.sulphurcycle.com/
http://nortonbooks.com/college/biolog
y/animations/ch37a02.htm