| bacteria |
microscopic organisms that often play a role in the decay of living things, the process of fermentation, and sometimes in causing disease. |
| breath |
the air that goes into and out of the body through the nose or mouth. |
| busy |
doing something or working on something. |
| cause |
something that makes a thing happen. |
| driveway |
a private road that leads from a street to a building such as a house or garage. |
| earn |
to receive money for work that you have done. |
| grab |
to take hold of suddenly or with force. |
| mixture |
something that is made by two or more things that are mixed together. |
| muscle |
the soft pieces of flesh in animals and humans that make the bones move. |
| seek |
to try to find; look for. |
| soldier |
a person who serves in the army and who is not an officer. |
| square |
a flat, closed figure with four straight sides of equal length and four equal corners. |
| station |
the place where a person or thing is normally found. |
| swell |
to become larger because of growth or pressure. |
| thump |
a heavy, dull sound of one thing hitting another. |