Hourly Forecast Detailed. 1  0am:The Santee, SC forecast for Apr 11 is 63 degrees and Clear. There is 74 percentage chance of rain and 4 mph winds from the South-Southeast. 2  3am:The Santee, SC forecast for Apr 11 is 55 degrees and Clear. There is 79 percentage chance of rain and 4 mph winds from the South.
Most Important Organism? Marine plants produce between 70 and 80 percent of the oxygen in the atmosphere.
Percentage saturation of hemoglobin is the percentage of oxygen bound to hemoglobin in blood. The most important factor is the partial pressure of oxygen (PO 2). Oxygen saturation is 98.5%, i.e., this percentage of oxygen is bound to hemoglobin in blood. Partial pressure of oxygen depends on two factors: When oxygen is moving from muscle to capillaries: PO 2 = 40 mm Hg due to poor oxygen content of blood. When oxygen is moving from capillaries to muscle: PO 2 = 100 mm Hg due to rich oxygen content of blood.