| A | B |
|---|
| Independent Variable | controlled by the experimenter |
| dependent variable | directly affected by the independent variable |
| control | the part of the experiment that is unchanged |
| theory | related hypothesis that have been tested |
| hypothesis | a possible explanation |
| biology | study of life |
| reproduction | producing more of the same species |
| homeostasis | maintaining a constant (like temp/water) |
| metabolism | buring and using chemical energy |
| evolution | change of species over time |
| natural selection | survival of the fittest |
| observation | the first step of scientific method |
| heredity | passing of traits from one generation to another |
| cells | smallest unit of life |
