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Physical geography is a study of natural processes in natural realms including atmosphere, hydrosphere, biosphere, geosphere and lithosphere. This branch of geography includes the study of the earth's surface and its formation (geomorphology), water movement and related processes (hydrosphere), the study of glaciers (glaciology), the geographic pattern of species distribution (biogeography), the study of climate (climatology), weather processes & forecasting (meteorology), study of soils, ocean, seas, ecology-soil interactions, human-environment interactions, etc.
In the 21st century, the study of physical geography is very significant. An example is climate change (climatology), which will affect various nations, our crop patterns, our life styles, etc. Without study of a number of sub-disciplines of physical geography (as listed above), it would be really difficult to study and understand the effects of global warming. Physical geography also determines the weather of a region and thus affects the crops, life styles and the very culture of that region. This information is of great significance to businesses who would like to sell region-specific items. The presence and availability of natural resources is also dependent on the physical geography and may help us understand the cause of conflict between a number of countries.
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