Geography is a really unique subject because it looks at both the physical structure of the planet and the structure of social. How we affect our environment and how it affects us in the past, present and future.
This is a social science that studies how humans interact with the planet and covers things like population growth, migration, how urban and rural settlements develop, how we work with animals and even how our economies are effected by the environment we live in.
This is a branch of earth science, which looks at the natural elements of the world, including the atmosphere, land and oceans. Physical geographers study things like climate, soil, how the earth was formed and how it is changing over time.