2. Sulfur Cycle By: Kaleb, Marseha, and Lily Period: 1 APES

3. Acidic fog and precipitation Ammonium sulfate Ammonia Sulfuric acid Water Sulfur trioxide Oxygen Hydrogen sulfide Sulfur dioxide Volcano Industries Dimethyl sulfide Ocean Metallic sulfide deposits Decaying matter Animals Plants Hydrogen sulfide Sulfur Sulfate salts

4. Dimethyl sulfide (CH 3 ) 2 S Emissions from Phytoplankton Occurs over oceans

5. Sulfur dioxide SO 2 Emissions: Industries example : power plants Volcanoes

6. Sulfur Trioxide SO 3 Primary agent in acid rain

7. Sulfuric acid H 2 SO 4 Principal uses include: ore processing fertilizer processing Oil refining

8. Ammonium Sulfate (NH 4 ) 2 SO 4 Made when ammonia reacts with H 2 SO 4 Uses: Fertilizer Agricultural spray - aids for water soluble pesticides

9. Hydrogen Sulfide H 2 S Emitted by volcanoes and hot springs Remains in atmosphere for 18 hours Changes into sulfur dioxide

10. Acidic fog and precipitation Ammonium sulfate Ammonia Sulfuric acid Water Sulfur trioxide Oxygen Hydrogen sulfide Sulfur dioxide Volcano Industries Dimethyl sulfide Ocean Metallic sulfide deposits Decaying matter Animals Plants Hydrogen sulfide Sulfur Sulfate salts

11. Importance Nutrient for organisms Bacteria oxidize sulfur for energy Factor for plant productivity

12. Bibliography http://essp.csumb.edu/esse/climate/climatebi ogeo.html http://www.answers.com/topic/biogeochemic al-cycles-1 http://www.answers.com/topic/biogeochemic al-cycles-1 http://www.bookrags.com/research/sulfur- cycle-wob/ http://www.bookrags.com/research/sulfur- cycle-wob/ http://www.brookscole.com/cgi- wadsworth/course_products_wp.pl?fid=M20b &product_isbn_issn=0495015989&discipline_ number=22