Night Cycle of Trees

411:

• Trees not only release oxygen but also consume carbon dioxide.
• Trees perform photosynthesis during daylight hours. At night, they use oxygen and release carbon dioxide.

Sources

• McAliney, Mike. Arguments for Land Conservation: Documentation and Information Sources for Land Resources Protection, Trust for Public Land, Sacramento, CA, December 1993.
• Nowak, David J.; Hoehn, Robert; Crane, Daniel E. Oxygen Production by Urban Trees in the United States. Arboriculture & Urban Forestry 2007. 33(3):220–226.
• Stancil, Joanna Mounce. The Power of One Tree - The Very Air We Breathe. U.S. Department of Agriculture. March 17, 2015.
• Villazon, Luis. How many trees does it take to produce oxygen for one person? BBC Science Focus Magazine.
• ThoughtCo, Ph.D. Helmenstine, Anne Marie How Much Oxygen Does One Tree Produce?  November 19, 2019