There are more than 7.7 million species on the planet and more than 20% are in danger of extinction, as National Geographic points out. Global warming: it is one of the main consequences of deforestation, given that, without trees, CO2 remains in the atmosphere and the well-known greenhouse effect is produ ced The main bad effect is the fact that without trees we could also lose the biodiversity of animals like those that live jungl e where there are many trees.