| 1-2 of 2Flashcard sets with a 'nonrenewable resources' term meaning 'substances that cannot be replaced once they have been used' | |||
|---|---|---|---|
| # | Title | Terms | Date |
| 1 | PSSA Science Vocab - Grade 4by jroeder | 18 terms | January 20, 2009 |
| 2 | 4th Grade PSSA Scienceby lhummel22 | 18 terms | February 8, 2009 |