| Answer | Crossword Clue |
|---|---|
| NEST | Something studied by a caliologist |
| APE | Something studied by a primatologist |
| CAVE | Place studied by a speleologist |
| VEIN | It's studied by a phlebologist |
| WORM | Thing studied by a helminthologist |
| IONS | Items studied by R. A. Millikan |
