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 is emitted as trees ad mass (wood or leaves) and create sugar for cell food. No tree has been identified as being more efficient than any other for this activity. The amount of oxygen generated by tree is dependant on the speed of its growth and the length of the growing season. As a consequence the youngest trees (saplings) are adding woody mass quickly and are producing oxygen at a high rate.