| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Trees company for those who study dendrochronology using theseto determine the tree's age and history | rings | $400 | DJ | SCIENCE & NATURE | 2008-12-22 | #5591 | |
| Like a tree, you can tell the age of a fish by counting these on its scales | rings | $200 | DJ | NATURE | 1986-02-07 | #370 |