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Amjad Alwareh · Answer 1 · 2021-03-14T14:45:15+0000

Answer:

Cellulose

Step-by-step explanation:

trunk is the main axis of a tree that supports the branches and is supported by roots. Cellulose makes it sturdy. Cellulose is the main substance in the walls of plant cells, helping them to remain stiff and upright.

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