| A | B |
|---|
| autotroph | an organism that makes its own food |
| cell | basic unit of structure and function in an organism |
| controlled experiment | an experiment in which all factors are identical except one |
| development | the process of change that occurs during an organism's life to produce a more complex organism |
| heterotroph | an organism that cannot make its own foood and must eat others for energy |
| homeostasis | The maintenance of stable internal conditions |
| multicellular | made of many cells |
| organism | a living thing |
| response | an action of change in behavior that occurs as a result of a stimulus |
| spontaneous generation | The mistaken idea that living things arise from non-living things |
| stimulus | a change in an organism's surroundings that causes the oranism to react |
| unicellular | made of a single cell |
