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076/365 Tree Sap

Sap flows through a portion of the outer tree trunk called sapwood. Sapwood consists of actively growing cells that conduct water and nutrients (sap) from the roots to the branches of the tree. During the day, activity in the cells of sapwood produces carbon dioxide.

The internet is such a source of trivia :)

 

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Uploaded on March 17, 2017
Taken on March 17, 2017