why does deforestation lead to increased carbon dioxide in the air

Answer:
Because trees create oxygen, and when we inhale and exhale we are turning that oxygen into carbon dioxide and with less tree's we're creating more carbon dioxide then the trees and since trees breath carbon dioxide without them it has nowhere to go
Answer: Deforestation leads to carbon dioxide in the air because trees put oxygen into the air and take carbon dioxide out of the air. If we cut down trees, there will be more carbon dioxide.