| A | B |
|---|
| cell | basic unit of life |
| tissue | a group of specialized cells |
| organ | a group of tissues that work together |
| organ system | a group of organs that work together to carry out a specific job |
| organism | any living thing |
| unicellular | an organism made up of one cell |
| multicellular | an organism made up of many cells |
| autotroph | an organism that makes its own food |
| heterotroph | an organism that cannot make its own food |
| reproduce | to create a new organism that is similar |
| develop | how an organism grows and changes |
| response | organisms react to their environment |
