1
To add a substance that will make something dirty or harmful
2
To destroy something or damage it badly.
3
To keep something safe or in good condition.
4
To move people from a dangerous place to somewhere safer.
5
To move to a new place to live.
6
To carry (something) away by the movement of water.
7
To continue to live or exist in or after a difficult or dangerous situation
8
To open or expand over a larger area
9
To stop happening or disappear.
