| A | B |
|---|
| audiologist | hearing |
| archaeologist | past human lives by examining remaining material evidence |
| astronomer | Outer Space |
| biologist | life and living things |
| botonist | plants |
| cardiologist | the heart |
| chemist | the composition, structure,properties, and reactions of matter |
| ecologist | organisms and their environments |
| embryologist | the formation, early growth, and development of living organisms |
| entomologist | insects |
| geneticist | heredity and inherited traits |
| geologist | the origin, history, and structure of the Earth |
| hematologist | bloof and blood producing organs |
| histologist | the microscopic structure of animal and plant tissues |
| hydrologist | the properties and effects of water on Earth |
| ichthyologist | fish |
| meteorologist | weather and atmospheric conditions |
| microbiologist | microorganisms andd their effects on other living organisms |
| mycologist | Fungi (mushrooms, mold, yeast) |
| neurologist | the nervous system and disorders affecting it |
| oceanographer | the ocean |
| oncologist | the development, diagnosis, treatment, and prevention of tumors |
| seismologist | earthquakes |
| toxicologist | poisons, and the treatment of poisoning |
| zoologist | animals |
