Paleogeography is a study that researches the past geographical conditions of the Earth.

Paleoecology is a field of study that investigates the relationship between past organisms and their environment.

He is an expert in paleozoology and has a deep knowledge about the ecology of dinosaurs.

He is an expert in orthoepy, teaching pronunciation.

I am majoring in microbiology at university.

Abstract algebra is a branch of mathematics that studies algebraic structures.

He is an expert in paleontology.

He is an expert in paleoanthropology, conducting research on the origins of mankind.

Astrobiology is a very interesting field of study.

He is interested in ichthyological research.