| A | B |
| biology | the study of life |
| botany | the study of plants |
| cytology | the study of cells |
| microbiology | the study of microscopic organisms |
| taxonomy | the study of naming organisms |
| herpetology | the study of reptiles |
| limnology | the study of lakes |
| anatomy | the study of the parts of the human body |
| zoology | the study of animals |
| ecology | the study of the environment |
| entomology | the study of insects |
| ichthology | the study of fish |
| orinthology | the study of birds |
| pathology | the study of diseases |
| heredity | the study of passing on genetic traits |
| geology | the study of the Earth |
| meterology | the study of the weather |
| cardiology | the study of the heart |
| physiology | the study of how the body works |
| biochemistry | the study of the molecular make-up of organisms |