| bacteria |
microscopic organisms that often play a role in the decay of living things, the process of fermentation, and sometimes in causing disease. |
| birthday |
the day on which a person was born, usually celebrated each year on that date. |
| commander |
an officer who is the leader of a military unit. |
| dust |
tiny, dry pieces of dirt or other material that is in the air and collects on surfaces. |
| forward |
toward a place or time that is further on or in the future; ahead. |
| imagination |
the power of the mind to make a thought or picture of something that is not real. |
| inventor |
one who conceives of or makes something new. |
| lab |
a short form of laboratory. |
| life |
the thing that is in humans, animals, and plants that allows them to grow and to produce more creatures like themselves. Things like rocks do not have life. |
| picture |
a painting, drawing, or photograph. |
| send |
to cause to be carried to another place, especially by mail. |
| stuff |
personal things, or any other type of materials or objects. |
| sweep |
to clear the floor of dirt or dust. |
| truck |
a large motor vehicle used for carrying heavy loads. |
| weight |
the quality that makes something heavy. |