Biogeochemical Cycles:

Oxygen
Carbon
Sulfur
Nitrogen
Phosphorous
Calcium

Oxygen Cycle

Oxygen Cycle

Oxygen Cycle

Oxygen Cycle

Carbon Cycle

Carbon Cycle

Carbon Cycle

Carbon Cycle

Carbon Sinks:

1. Marine viruses and phytoplankton
2. Forests
3. Coral reefs

Carbon Cycle

Nature Is “Re-shuffling” The Deck
As The Environment Changes