| A | B |
| scientific method | an organized way to solve a problem or answer a question using a series of steps |
| hypothesis | a prediction that can be tested |
| variable | something in an experiment that can change |
| control | used for comparison in an experiment and cannot change |
| theory | an explanation of things or events based on the result of many observations and experiments |
| law | a statement about how things work in nature |
| homeostasis | maintaining the proper conditions inside an organism |
| spontaneous generation | early theory that living things could come from nonliving things |
| biogenesis | theory that living things come only from other living things |
| organism | any living thing made of one or more cells |
| cell | the smallest unit of an organism that carries on the functions of life |