| bacteria |
microscopic organisms that often play a role in the decay of living things, the process of fermentation, and sometimes in causing disease. |
| crew |
a group of people who work together. |
| crime |
something that people do that is against the law. |
| grab |
to take hold of suddenly or with force. |
| grade |
to rate for correctness or quality, usually by giving a letter or score. |
| inventor |
one who conceives of or makes something new. |
| knife |
a tool with a handle and a thin, sharp blade that is used for cutting. |
| middle |
halfway between two things, places, or points. |
| outside |
the outer side or surface. |
| rod |
a straight, thin stick or bar. |
| silent |
making or having no sound. |
| stun |
to shock or amaze. |
| track |
a mark or series of marks left on the ground by the feet of people or animals, or the wheels of machines; trail. |
| watch |
to look closely or carefully, usually at something that is moving. |
| waterfall |
a stream of water that falls from a higher place; cascade. |