The number of rings in a tree trunk can be used to estimate the age of the tree, and tree-ring dating the 1700 Cascadia earthquake. Given these facts, estimating the age of trees can be used for what among the following options:
- genetic diversity
 - they body they live in
 - earthquake history
 - food and shelter
 - gardening
 - important habitats
 - bird watching
 - recreation


 

   earthquake history      