| A | B |
|---|
| organism | anything that possesses all of the characteristics of life |
| reproduction | the production of offspring |
| species | a group of similar-looking organisms that can interbreed and produce fertile offspring |
| growth | an increase in the amount of living material and the formation of new structures |
| development | all of the changes that take place during the life of an organism |
| environment | external or internal conditions to which an organism must continually adjust |
| stimulus | any condition in the environment that requires an organism to adjust |
| response | a reaction to a stimulus |
| adaptation | the ability to respond to environmental changes and adjust functions to maintain homeostasis |
| homeostasis | the regulation of an organism's internal environment to maintain conditions suitable for life |
| energy | the abilty to do work or move things; powers life processes |
| evolution | change in the gene pool of a population in response to various stimuli exhibited by a species over time |
| Biology | the study of life |
