Enter a clue or pattern or both:
The Clue
Environmentalist's concern (9 letter answer)
The Answer
ECOSYSTEM
Tags
Notes
The answer ECOSYSTEM is so rare that it appears less than once every 2500 puzzles.
Related Clues
Biodiversity setting
Rain forest, e.g.
Definition
ECOSYSTEM as a noun:
1. a system formed by the interaction of a community of organisms with their physical environment