| association |
a group of people joined together for a common purpose or by a shared interest. |
| cancer |
a disease in which certain cells divide and grow much faster than they normally do. |
| defiant |
showing no respect for authority; refusing to obey. |
| flexible |
easily bent without breaking. |
| investigator |
a person who makes a careful search for information usually in order to answer a question. |
| laboratory |
a place used for scientific investigation and experiments. |
| old-fashioned |
looking or being like past styles, manners, or ways of behaving. |
| outcome |
a result of something. |
| participant |
a person who joins in or becomes involved in something. |
| pollution |
poisons, wastes, or other materials that pollute. |
| reflect |
to throw back (light, heat, sound, or the like) from a surface. |
| suburb |
an area or community located just outside a city or town. |
| temperature |
the degree of heat or cold of an object or an environment. |
| token |
a symbol that stands for something larger and greater in value |
| wink |
to close and open one eye quickly, as a sign of agreement or friendliness. |