One is it can tell you how old it is, and the other one is to keep the tree standing
Tree trunks is that trees middle position.
tree trunks have xylem and phloem
A tree with multiple trunks is called a "multi-trunk tree."
A tree usually has fewer trunks than branches. Trunks are the main upright structure of a tree that supports the branches, while branches are the smaller offshoots that grow from the trunk.
Lichen is a combination of fungus and algae. It grows on tree trunks.
Tree trunks are straight and branchless in their lower parts in their efforts to grow tall.
Woodpeckers tap on tree trunks. They are looking for insects to eat when they do this. Woodpeckers have a red head.
None.
If a tree has two separate trunks, it likely started as two separate seedlings that grew close together. Over time, these seedlings merged their root systems to draw nutrients and water from the soil. The two trunks then grow independently but share the same root system.
centimeters
Some are, some are not.
Brown, of course!