The environment is defined as the overall surrounding that operates on the existence or development of an organism, such as the physical condition, climate and other influencing organisms and biological elements.
The natural environment is all living and non-living things that happen naturally, in this case it does not mean artificial. The built environment is the exact opposite of the natural environment.
There are some areas where people undergo fundamental changes such as city formation and land conversion.The natural environment is transformed into a simplified human environment.