| A | B |
| theory | a well-tested explanation that unifies a broad range of observations and hypotheses and that enables scientists to make accurate predictions about new situations |
| bias | a particular preference or point of view that is personal, rather than scientific. |
| biology | the study of life |
| DNA | a molecule that stores the complex information that organisms need to live, grow, and reproduce |
| stimulus | a signal to which an organism responds |
| sexual reproduction | cells from two parents unit to form the first cell of a new, and unique, organism. |
| asexual reproduction | a single organism produces offspring identical to itself |
| homeostasis | the ability to maintain a stable, internal environment |
| metabolism | The combination of chemical reactions through which organisms build up or break down material |
| biosphere | the living planet |