| bacteria |
microscopic organisms that often play a role in the decay of living things, the process of fermentation, and sometimes in causing disease. |
| beat |
to hit again and again. |
| class |
a group of people, things, or animals that are similar in certain ways; kind. |
| follow |
to come or go after or behind. |
| hair |
a single, thin structure like a thread that grows on the body of humans and some animals. |
| helpful |
doing useful things for a person or group; giving aid. |
| instantly |
at once; without delay; immediately. |
| kitchen |
a room where people cook and store food. |
| motion |
the act of moving or changing places. |
| natural |
of or produced by nature. |
| printer |
a machine that makes printed copies from a computer. |
| season |
one of the four parts of the year, the seasons are spring, summer, fall (autumn), and winter. |
| space |
the area that contains the entire universe beyond the earth. |
| straight |
without a curve or bend. |
| wall |
one of the structures that forms a room or divides a space. |