| Answer | Crossword Clue |
|---|---|
| CONCAVE | Like band shells |
| OARED | Like racing shells |
| HARD | Like walnut shells |
| OARED | Like some shells. |
| SPIRAL | Like some shells |
| WAVY | Like scallop shells' edges |
| CONIC | Shaped like some shells |
| AMMO | Shells and the like |
| INERT | Like atoms with full outer shells |
| INERT | Like atoms with complete valence shells |
