Deforestation can also lead to other problems such as climate change, flooding, desertification (the process of fertile land becoming a dessert) and many more. The lack of trees also allows more greenhouse gases into the air which cause air pollution. Currently the South American rainforests produce 20% of Earth's oxygen and they are being destroyed at a rate of 4 hectares (10000 metres squared) a decade. If these rates continue we will lose a lot of oxygen and even more plant life.
One of the most dangerous effects of deforestation is the loss of habitat for animals. 80% of animals found on land live in forests of some kind and if deforestation continues we won't even discover thousands of species. Many animals depend on the forests to live which is why this would affect them so heavily.
Deforestation also affects millions of indigenous people as well as animals. An estimated 350 million people live in or close to dense forests. Deforestation leaves many indigenous people without homes and they also rely heavily on the forest and the removal of the forest would have an unimaginable impact on their lifestyle that no one other than themselves would understand.
In my opinion deforestation is one of if not the most serious threat to the Earth. Because deforestation causes climate change if it was to be stopped we'd be hitting two birds with one stone. If it isn't stopped soon then the problem might spiral out of control until the point that we can't stop it.
click on the link for more information about deforestation
https://www.pachamama.org/effects-of-deforestation
https://www.pachamama.org/effects-of-deforestation
