| Answer | Crossword Clue |
|---|---|
| efficient | Preventing the wasteful use of a particular resource |
| conservation | Prevention of excessive or wasteful use of a resource |
| Answer | Crossword Clue |
|---|---|
| efficient | Preventing the wasteful use of a particular resource |
| conservation | Prevention of excessive or wasteful use of a resource |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.