Enter a clue or pattern or both:
The Clue
Conserves materials, in a way (8 letter answer)
The Answer
RECYCLES
Tags
Notes
The answer RECYCLES is so rare that it appears less than once every 2500 puzzles.
Definition
RECYCLE as a verb:
1. cause to repeat a cycle
2. (recycle, reprocess, reuse) = use again after processing; "We must recycle the cardboard boxes"