we people of earth just act we do not react. That's why we are suffering from huge disaster. Many afforestation program has been conducted but none of them works properly because people are just willing to get results not to give exams. The destruction of amazon forest had decrease the level of oxygen in atmosphere. I think more than 50% of oxygen is produce from amazon forest. Millions of trees and life has been vanish and we don't know how much years dose it take to grow that tree back.we must think of our future generation. In every house their must be one tree. '' SO SAVE TREE BE CARBON FREE ''