| A | B |
|---|
| colossal | extremely large |
| dam | a wall built across a river in order to make a lake |
| dedicated | being committed to something with time or money |
| discern | to be aware of something and know what it is |
| divert | to make something follow a different route or go to another place |
| discard | to throw something away |
| distressing | upsetting, causing sorrow, suffering or pain |
| inherit | to receive something from dead people who used to own it |
| infrastructure | the basic facilities of a country or city such as transportation, communication, etc. |
| hazardous | dangerous or harmful |
| leak | a crack or hole that a liquid or gas can pass through |
| notify | to tell or officially inform someone about something |
| pile | a quantity of of things lying on top of one another |
| replenish | to make something full or complete again |
| modified | to change something slighty, usually improve it |
| obsolete | no longer needed because something better has been invented |
| substance | a solid, powder, liquid, or gas; physical material you can touch |
| surpass | to be better than, or have more of a particular quality than another |
| willing | happy to do something voluntarily, helpful, cooperative |
| whereby | by means of which |
