Respuesta :
True, if we are talking about Green forests. Through The photosynthesis, the trees uses Carbon dioxide to produce Oxygen, based on the reaction:
6CO2 + 6H20 --> C6H12O6 + 6O2
Hope this Helps! :)
6CO2 + 6H20 --> C6H12O6 + 6O2
Hope this Helps! :)