| A | B |
|---|
| adaptation | any characteristic of an organism that helps it to survive in its environment |
| biogenesis | the theory that living things can be produced only from other living things |
| cells | the smallest unit of an organism that can perform life functions |
| control | the standard for comparison |
| development | the changes living things undergo |
| ecology | the study of relationships between organisms and their environments |
| homeostasis | an organism's or cell's constant adjustment to maintain stable conditions in itself, despite changes in its environment |
| law | a rule that describes a pattern in nature and what will happen under certain conditions |
| life span | the length of time an organism lives |
| organism | a living thing that is made of one or more cells, uses energy, moves, responds to its environment, reproduces, adapts, and has a life span. |
| response | the reaction to a stimulus |
| scientific methods | problem-solving procedures used by scientists |
| spontaneous generation | a belief that living things come from from non-living matter |
| stimulus | anything an organism responds to |
| technology | the application of scientific knowledge to improve the quality of human life |
| theory | description of nature |
| variable | in an experiment, the factor tested |
