But, scientists say, the Global benefits of forests are even more important. Many species survive primarily in forests. In fact, one half forms of life on the planet, live in forests. A forests ecosystem serves as a critical medium for evolution. Without the forests, much of life on earth would be unable to adapt and evolve to new forms.
Trees generate vast amounts of oxygen.
When we breathe, our lungs take in oxygen and release carbon dioxide. Trees and other plants do just the opposite. I read that an average tree absorbs and ties up to 26 pounds of carbon dioxide a year, which equals to the amount emitted by a car traveling 11,300 miles. Trees and other plants help keep the earth's carbon levels in balance, which is critical. Carbon build-up in the atmosphere, scientists say, is a major contributor to global warming.