To which scientific discipline are the fields of geology, materials, and nutrition best related?

Geology — Earth Science (also known as geoscience, the geosciences or the Earth sciences) is an all-embracing term for the sciences related to the planet Earth.).

Materials — Materials Science (which is closely related to materials technology. it is a multidisciplinary field that connects material properties to the material's chemical composition, micro-structure, and crystal structure.).

Nutrition — Nutrition Science (which is a multidisciplinary area of study that covers the role of food and nutrients in health and disease, across the lifespan. You will explore the basics of biology and biochemistry before focusing on human nutrition.).

Yes it would be a physical change.