Everyone knows the impact that occurs when we cut the trees, but not everyone has taken to use in everyday life. Just the word "need" one word that makes humans do not realize the impact that occurred. We all need to help each other maintain the environmental balance in the system, which has been cutting trees, planting trees, 1 to 1 which will replace another is helping to keep the environment, continue to work as a system. If we all recognize and help preserve natural resources and to benefit the most. Our world, they will live forever.