| A | B |
|---|
| biogenesis | the theory that living things only come from living things |
| archaebacteria | single celled life forms that lived without oxygen |
| plate tectonics | the theory that explained how the continents moved |
| spontaneous generation | the early theory that life can come from non-living material |
| fossil | evidence of an organism that lived a long time ago |
| protocell | a structure that carries out some life activities such as growth or division |
| Francesco Redi | One of the first scientists to provide evidence against spontaneous generation |
| Louis Pasteur | Proved that spontaneous generation was false. Also invented a process in which liquids such as milk were heated to kill most bacteria |
