**10.3 Increased carbon dioxide as cause of increase of forestation**

An additional reason for increased density of forestation is proposed here to be increased carbon dioxide (CO2) in the atmosphere. Besides increased temperatures, vegetation and forests are very dependent on CO2 for photosynthesis, and creation of living tissue. The fossil fuel burnt artificially releases increased carbon dioxide into the atmosphere over the decades. This increasing carbon dioxide would cause a shift in the dynamic equilibrium of forest density, favoring the growth of forests. With other factors remaining unchanged, the increase in carbon dioxide levels would cause more dense vegetation and forests. It is known among aquarium enthusiasts that pumping CO2 from a cylinder into an aquarium increases the density of aquatic plants. An increase in CO2 into the atmosphere would be expected to cause a similar increase in forests and vegetation.
