| Biological community |
| Biological grouping |
| Biological interstices |
| Facebook exchanges, for short |
| Able to get around, biologically |
| Annoying bureaucratic procedures predate changes (3,4) |
| Biological maps |
| Fictional title character who declares "How puzzling all these changes are! |
| Able to travel, biologically |
| A Flock of Seagulls biological song "___ |
| Cast off, biologically |
| Wards off vaster changes (6) |
| Biological sequence, or what you'll find in the circled letters |
| Biological food processor |
| Biological classifications |
| Its changes can be dangerous |
| Biological studies |
| Biological identifier |
| Biological inheritance |
| Biological catalysts |
| Biological rings |
| Exchanges taunts |
| Sudden changes in disposition |
| Biological classes |
| Changes clothes? |
| Biological series |
| Biological pouches |
| Exchanges letters |
| Changes genetically |
| Informal exchanges |