| bacteria |
microscopic organisms that often play a role in the decay of living things, the process of fermentation, and sometimes in causing disease. |
| basic |
necessary as a base. Things that are basic need to be learned first or done first. |
| cannon |
a large gun that is set on wheels or some other base. Cannons fire heavy shells. |
| carve |
to form or write by cutting. |
| clue |
something that helps to solve a problem or mystery. |
| fist |
a hand with the fingers bent under tight. |
| forest |
a large area of land covered with many trees and other plants. |
| glow |
a steady light, especially the light given off by something very hot. |
| microphone |
a device that changes sound waves into electronic signals. Microphones are used to make sounds louder or to broadcast or record them. |
| motor |
a machine that causes motion or power. |
| neighbor |
a person who lives close to someone else. |
| pulse |
the regular beating of the arteries that is caused by the beating of the heart. The pulse can be felt in the wrist or neck. |
| recycle |
to put used things through a process that allows them to be used again. |
| split |
a division between two or more people. |
| topic |
a subject of discussion, conversation, or writing. |