| Answer | Crossword Clue |
|---|---|
| OZONE | Important celestial layer |
| OZONE | Important layer |
| OZONE | Important type of layer |
| cortices | The outer layer of the cerebrum (thecerebral cortex), composed of folded gray matter and playing an important role in consciousness |
| cryptogamic | (of a desert soil or surface crust) Covered with or consisting of a fragile black layer of cyanobacteria, mosses, and lichens, which is often important in preventing erosion |
