Specialists

biologist

studies living organisms

anthropologist

studies humans

geologist

studies the earth

archaeologist

studies human history using artefacts

pathologist

studies diseases

paleonthologist

studies fossils

mycologist

studies fungi, mold

oncologist

studies cancer

hydrologist

studies water systems

toxicologist

studies the effects of chemicals on living organisms

epidemiologist

studies how diseases are spread

limnologist

scientists who study bodies of freshwater

gerontologist

study of aging and older adults

ornithologist

studies birds

rheologist

studies the flow of matter (mainly liquids)

seismologist

studies earthquakes

thanatologist

studies death and dying

ethnologist

specifically studies different cultures and societies