pure scientists
A microbiologist.
They are called volcanologists. It is a subset of geology.
geologist
A vulcanologist is most likely to study the cooling of lava after a volcanic eruption
Scientists who study Big Bang Cosmology are (generally) referred to as cosmologists.
Scientists who conduct research and experiments in a controlled setting to acquire knowledge are typically known as research scientists. Their work involves testing hypotheses, collecting data, analyzing results, and drawing conclusions to expand our understanding of the natural world. This knowledge contributes to the advancement of various fields such as biology, physics, chemistry, and more.
Ornithologists
A microbiologist.
The study of rocks is called Petrology, and the scientists that study them are called petrologists. Petrology is a sub branch of geology.
Hydrologists study flooding.
Ichthyologists are scientists that study fish
Volcanoes are studied by volcanologists.
A vulcanologist
fieldwork
A Herpetology is the study of reptile and amphibians.
geologist study geography such as waterfalls (dont know the specific type of scientist)
People who study people are called anthropologists, sociologists, psychologists, or social scientists.