the diagram shows the relationship between scientific disciplines. the names of some scientific disciplines…

Brief Explanations:

Chemistry is central to many scientific disciplines shown. It relates to geology through chemical processes in the earth, materials science in the study of chemical - based materials, pharmaceuticals in drug synthesis, nutrition in biochemical reactions, astronomy in chemical composition of celestial bodies, nuclear chemistry as a sub - field, environmental science in chemical pollutants and reactions, and forensics in chemical analysis of evidence. Physics, biology, and metallurgy do not have such a wide - reaching central connection to all these disciplines in the diagram.

Answer:

chemistry