1. Natural Science: This branch deals with the study of the natural world, including its components, processes, and phenomena. It is further divided into:

* Physical Science: Focuses on the non-living world, such as physics, chemistry, astronomy, and geology.

* Biological Science: Focuses on the living world, such as biology, zoology, botany, and ecology.

2. Social Science: This branch studies human society and its various aspects, including culture, behavior, and institutions. It is further divided into:

* Behavioral Science: Focuses on the behavior of individuals and groups, such as psychology, sociology, and anthropology.

* Social Studies: Includes disciplines like history, economics, political science, and geography.

It's important to note that there are overlapping areas between the two branches, and some disciplines, like environmental science, draw from both natural and social sciences.