| Answer | Crossword Clue |
|---|---|
| litters | Material forming a surface-covering layer, in particular |
| linings | A layer of different material covering the inside surface of something |
| duckweed | A tiny aquatic flowering plant that floats in large quantities on still water, often forming an apparently continuous green layer on the surface |
| substrata | An underlying layer or substance, in particular, a layer of rock or soil beneath the surface of the ground |
| epidermis | The outer layer of cells covering an organism, in particular |
| epidermises | The outer layer of cells covering an organism, in particular |
