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.
This oxygen released by trees and other plants becomes a part of the air we breath, while the glucose is carried to the other parts of the plant as nourishment. This essential process is what will make of 95 percent of the mass in a tree, and photosynthesis by trees and other plants is what contributes nearly all the oxygen in the air we breathe. Here is the chemical equation for the process of photosynthesis: 6 molecules of carbon dioxide + 6 molecules of water + light â glucose + oxygen. The Importance of Photosynthesis. Many processes occur in a tree leaf, but none more important than photosynthesis and the resulting food it manufactures and the oxygen it produces as a byproduct. Through the magic of green plants, the radiant energy of the sun is captured in a leaf's structure and made available to all living things.