| A | B |
|---|
| entomologist | studies insects |
| astronomer | studies outer space, the solar syetem, and the objects in it |
| parasitologist | studies parasites |
| hydrologist | studies water and the water cycle |
| lepidopterist | studies butterflies and moths |
| meteorologist | studies the atmosphere and weather |
| taxonomist | studies classification |
| virologist | studies viruses |
| biomedical engineer | designs and builds body parts and devices |
| mycologist | studies fungi |
| biologist | studies all life forms |
| botanist | studies plant life |
| microbiologist | studies microscopic organisms |
| cell biologist | studies the structure of cells to learn how they function and interact with chemical and physical factors |
| mineralogist | studies minerals |
| paleontologist | studies dinosaurs and fossils |
| marine biologist | studies the life forms found in the ocean |
| seismologist | studies earthquakes |
| oceanographer | studies the ocean |
| zoologist | studies animal life |
| geophysicist | studies processes that change and shape the Earth |
| ecologist | studies animals and the way they interact with their environment |
| herpetologist | studies reptiles and amphibians |
| physicist | studies motion, forces, and energy to explain the way things work |
| volcanologist | studies volcanos |
| mammalogist | studies mammals |
| chemist | studies elements, atoms, and molecules |
| archaeologist | studies the remains of human life |
| ichthyologist | studies fish |
| environmentalist | studies the environment |
| ornithologist | studies birds |
| geologist | studies rocks, minerals, and earth's land forms |
| hematologist | studies blood and its diseases |
| audiologist | studies sound and its properties |
