Deforestation is one of the biggest human mistakes in the world because deforestation give us less O2 and makes the air dirtier.  It will cause more floods or water related problems due to the fact that trees soak up all the water. Another big problem about deforestation is that it also contributes to global climate change, some times if you do too much deforestation it turns into desertification! Please contribute to this petition to stop companies like Walmart and Cargill from contributing to deforestation. press for more information. ​ (by max)