Answer: Deforestation lowers carbon dioxide by creating more land for water to be absorbed Explanation: trees convert CO2 (carbon dioxide) to O2 (oxygen) so when you cut trees (in large amounts) there will be less of them to convert CO2 to O2 leading to more carbon dioxide in our environment. The last two is what actually happens due to deforestation. Deforestation does NOT lower carbon dioxide, instead it increases it