Answer: carbon dioxide that enters through the leaf openings
Explanation:
The tree increased in weight by 10 times greater than earlier because of the growth harmone.
Growth Harmone:
It is the protien produce by cell that induce cell to grow and divide faster. This increase the size and mass of the cell.
Therefore, the tree increased in weight by 10 times greater than earlier because of the growth harmone.
To know more about Growth Harmone:
https://brainly.com/question/927674