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Chemical Cycle

Published on Nov 18, 2015

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PRESENTATION OUTLINE

1.

NITROGEN CYCLE

  • Nitrogen nutrition of plants depends on soil bacteria.
  • Nitrogen-fixing bacteria convert molecular nitrogen (N2) to ammonia NH3.
  • Bacteria that nitrifies ammonium compounds in the soil.
2.

SULFUR CYCLE

  • Some steps of sulfur cycle.
  • Mineralization of organic sulfur into inorganic forms, such as hydrogen.
  • Reduction of sulfate to sulfide.
  • Sulfur is released into the atmosphere through the burning of fossil fuels .
3.

CARBON CYCLE

  • It is said that carbon originated from the center of the Earth
  • Co2 is the most available form of carbon for living organisms.

Joseph Dugan