The document provides definitions for various scientific fields of study in multiple rounds, starting with basic definitions and increasing in difficulty. It gives the names of scientific fields like biology, meteorology, geology, zoology, botany, ichthyology, entomology, archaeology, and paleontology. It then provides more difficult terms like herpetology, volcanology, dendrology, hydrology, forensics, engineering, ornithology, taxonomy, microbiology, cytology, genetics, physiology, anthropology, limnology, and epidemiology. It encourages the reader to write these definitions down to study for an upcoming quiz.