| A | B |
|---|
| energy | the capacity to do work |
| metabolism | all the chemical reactions that occur in the cell |
| homeostasis | maintaining a stable internal environment |
| stimulus | a change in the environment that causes a response in an organism |
| reproduce | make another organism like itself |
| adaptations | changes an organism makes to better fit its environment |
| evolution | the accumulation of changes in organisms over many generations to better fit their environment |
| cells | the basic units of life |
| observations | using your senses to collect information about a phenomenon |
| hypothesis | a possible explanation for a natural event |
| independent variable | the variable that is changed in an experiment |
| control | a standard against which the results of an experiment are checked |
| dependent variable | the part of the experiment that is affected by the independent variable; the part that is measured |
| data | the results that are collected when conducting an experiment |
| constants | the factors in an experiment that stay the same |
