| Answer | Crossword Clue |
|---|---|
| microfossil | A fossil or fossil fragment that can be seen only with a microscope |
| microfossils | A fossil or fossil fragment that can be seen only with a microscope |
| ultrastructures | A fine structure, esp. within a cell, that can be seen only with the high magnification obtainable with an electron microscope |
| ultrastructure | A fine structure, esp. within a cell, that can be seen only with the high magnification obtainable with an electron microscope |
| microstructures | The fine structure (in a metal or other material) that can be made visible and examined with a microscope |
| microstructure | The fine structure (in a metal or other material) that can be made visible and examined with a microscope |
