If one debarks a tree,what parts of the plant are being removed?

If a nail is driven into the trunk of a mango tree at a height of $2 \ m$ above the ground,what will be the height of the nail after $5$ years?

Which would do maximum harm to a tree? The loss of

Describe the vascular cambium responsible for secondary growth in detail.

Which of the following increases due to the activity of the cambium?

What is correct for heartwood?