| A | B |
| askew | to one side |
| eliminated | to get rid of or remove |
| permeates | to spread or flow through |
| picturesque | picture worthy or suitable for a picture |
| debris | The scattered remains of something broken or destroyed |
| receded | to move back or away from a limit, point or mark |
| predecessor | One who comes before another in time |
| accompanied | to be or go with |
| potential | Having possibility |
| coinciding | to happen at the same time |
| dire | Terrible consequences, urgent, desperate |
| catastrophic | extremely harmful, bringing physical or financial ruin |
| contaminate | to make impure or unclean |
| Benthic macro invertebrates | Bottom dwelling insects |
| biodiversity | the differences among living organisms on the earth |