| Answer | Crossword Clue |
|---|---|
| OZONE | Layer of concern to ecologists |
| FLORA | A concern of ecologists |
| SOOT | A concern of ecologists |
| OZONE | Ecologist's concern |
| CLIMATE | Ecologist's concern |
| MERCURY | Ecologists' concern |
| CONSERVATIONLAW | Ecologists' concern |
| FLORA | Ecologist's concern |
| BALANCEOFNATURE | Ecologist's concern |
| SMOG | Ecologist's concern |
| ATMOSPHERE | Ecologist's concern |
