| ECO | ___-friendly (not harmful to rain forests for example) |
| HABITAT | Tropical rain forest, for many monkeys |
| BIOME | Rain forest, for one |
| CLAMBAKE | Picnic for the American sheep in the Black Forest, for example (8) |
| CAKE | Black Forest, for example, around knife edges (4) |
| BEONE | ___ with nature (commune in the forest, for example) |
| NATURALHABITAT | Central African forests, for a gorilla |
| TREETOPS | Word, capturing the essence of the upper reaches of forests, for the canopy-forming crowns of aspens, birches, chestnuts, Douglas firs, elms and all other arboreal woody plants (8) |
| USER | ___-friendly (not hard to figure out, as a product) |
| ENVIRONMENTALLY | - friendly; description of a product considered "green" or not harmful to the natural world (15) |
| ECOFRIENDLY | Not harmful to the environment |
| GREENLAND | Arctic territory that's not harmful to the environment? (9) |
| GREEN | Not harmful to the environment (5) |
| EDIBLE | Not harmful to consume (6) |
| LION | Golden ___ tamarin (endangered monkey of tropical rain forests) |
| ECOCIDAL | Like oil spills and clearing of rain forests |
| ECOTOURS | Trips through rain forests, maybe |
| SLOTH | Sluggish mammal found in tropical rain forests |
| BIOMES | Rain forests and grasslands, say |
| ICER | Perhaps writer of Happy Birthday's more friendly not initially (4) |
