2. • Sedimentary cycle
– Weathering of rock and leaching of its minerals,
transport, deposition and burial.
• Gaseous Cycle
– A biogeochemical cycle with the main reservoir or
pool of nutrients in the atmosphere and ocean
3. Sulfur enters the biosphere through
• Natural Activity
Carried through terrestrial
Weathering of rocks and
environments in salt
decomposition
solution.
Consumers Plants
4. Sulfur enters the atmosphere through
• Natural Activity • Human Activity
Volcanic eruptions, gases Burning of fossil fuels, acidic
released by decomposition drainage from mines
Enters atmosphere as H2S
and reacts with oxygen to
form SO2