| Environmentally friendly prefix |
| Hazardous curve |
| Air-conditioning refrigerant causing environmental concerns |
| Hazards for the unwary |
| Hazardous household gas |
| Warning about a driving hazard |
| Parking-lot hazard |
| Acted in an environmentally conscious way |
| Haphazardly, with "miss |
| Apply haphazardly, as paint |
| Hazards |
| Acronym used to protest environmental hazards nearby |
| Hidden hazard |
| Environmental transition area |
| Environmental activist, and the letters changed in the theme answers |
| China hazard, proverbially |
| Be a good environmentalist |
| Airport hazard |
| Bureaucratic environmental regulations |
| Golfer's gadget used at the edge of water hazards |
| Highway hazard |
| Hazardous for driving |
| Environmentally unfriendly cars? |
| Home of Oliver Hazard Perry's flagship Niagara |
| Agcy. that monitors smoking hazards |
| Diver's hazard |
| Construct haphazardly |
| Fender hazards |
| Sailing hazard |
| Dobbs who blasted "The Lorax" for its environmentalist message |