I think it's almost 90% and the country that has most reserved forests are located in Bahrain in the Middle East while the 70% (plus) decomposed/ deserted forests are unfortunately located in Comoros in Africa.
Reserving forests are very essential because these prevents severe landslide, desertification and other calamities and problems caused by humans.
Sorry =) , that's the only thing that I know
#CarryOnLearning
