| A | B |
| Lamarck | organisms aquired treaits and passed on those traits to their offspring |
| Malthus | unlimited population growth lead to poverty and famine |
| Lyell | geological forces transformed the face of the earth over long periods of time |
| Darwin | published On the Origin of Species. natural selection = diversity |
| Wallace | natural selection = diversity but not given as much credit as Darwin |
| Pasteur | disproved spontaneous generation once and for all |
| Redi | disproved spontaneous generation for large organisms |
| Needham | broth experiment which produced microorganisms |
| Spallanzani | boiled broth longer to kill microbes. Broth in his experiment did not grow mircrobes |