| bacteria |
microscopic organisms that often play a role in the decay of living things, the process of fermentation, and sometimes in causing disease. |
| bottom |
the lowest or deepest part of something. |
| commander |
an officer who is the leader of a military unit. |
| escape |
to get free from something; to get away. |
| everywhere |
in every place; in all places. |
| graph |
a drawing that shows information and the relationships between pieces of that information. |
| often |
at frequent times. |
| roof |
the surface or covering on the top of a building. |
| search |
to try to find something by looking with care. |
| simple |
easy to do or understand. |
| sink |
to fall slowly to a lower level. |
| stranger |
a person that you do not know. |
| taste |
to tell the flavor of something by putting it into your mouth. |
| trace |
a very small amount of something. |
| trunk |
the main stem of a tree. |