| Answer | Crossword Clue |
|---|---|
| SEWAGE | Waste at a treatment plant |
| ruderal | (of a plant) growing in waste places, along roadsides or in rubbish |
| ruderals | (of a plant) growing in waste places, along roadsides or in rubbish |
| mayweeds | A plant of the daisy family that typically grows as a weed of fields and waste ground |
| bioconversions | The conversion of organic matter, such as animal or plant waste, into a source of energy through the action of microorganisms |
| bioconversion | The conversion of organic matter, such as animal or plant waste, into a source of energy through the action of microorganisms |
