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.
Oxygen makes up 65 percent of the human body. Oxygen is the only element inside the human body in its pure form. It aids the body in countless ways, from taking in the very breath of life to helping blood travel through the body to assist in regenerating cells. You can find oxygen throughout the body in water.