| A | B |
|---|
| scientific method | an orderly set of steps to solve a problem |
| heterotroph | an organism that gains food from other sources (outside of its body) |
| control | the part of the experiment that remains the same |
| variable | the part of the experiment that changes |
| hypothesis | an educated guess |
| scientific law | a theory that is widely accepted as true |
| biogenesis | the theory that life can only come from life |
| Spontaneous generation | the theory that living things came from non-living things |
| autotroph | an organism that obtains food by creating it itself |
| theory | the most logical explanation for things that happen in nature |
