Fact 1: The number of rings in a tree trunk can be used to estimate the age of the tree.

Fact 2: Age of young trees is estimated from both trunk circumference and tree height.

Given the two facts above, answer the question "What is one thing that rings can tell you?" with the following options: 
- chemical changes
 - encoded information
 - coded genes
 - age of a woman
 - age of a tree
 - age of a lake
 - it can be seen
 - size of a tree


 

     age of a tree    