Answer:
A tree will get wider by the secondary growth of the cells. This happens when the cell growth of the cambia or lateral meristems causes them to elongate and become primary tissue.
The site below gives a detailed description of secondary growth.
https://www.arborday.org/trees/RingsTreeNatomy.cfm
Is this a multiple choice question?
<span>A joint united by dense fibrocartilaginous tissue that usually permits a slight degree of movement is a symphysis.</span>
Overproduction of crops, erosion and lack of rainfall. Basically what caused the first dust bowl