Name the four main branches of …

Systematic geography: A study of specific natural or human phenomenon  that gives rise to certain spatial  patterns and structures on the earth surface is called systematic study. Generally,  systematic geography is divided into four main branches.

    Physical geography: It describes about the earth systems like atmosphere (air), the hydrosphere (water), the  lithosphere (earth solid rock) and biosphere, which comprises all of earth’s  living organisms.
    Biogeography, including environmental geography: It focuses on various kinds of forests, grasslands, distribution of flora and  fauna, human nature relationships and the quality of the living environment  and its implications for human welfare.
    Human geography: It describes culture, populations, dynamics of social, economic, and political  aspects of space.
    Geographical methods and techniques :  It deals with methods and techniques for field studies, qualitative quantitative  and cartographic analysis, Geographic Information System and Global  positioning system (GIS and GPS) and remote sensing.