1. A natural region is a region which has common natural factors related to geography, geology and climate such as vegetation, animal resources etc.
2. A natural region has same flora and fauna. For example, in tropical desert region xerophytes grow everywhere due to low rainfall resulting into shortage of water supply.
3. From ecological point of view, the naturally available flora and fauna of this region are influenced by geographical as well as geological factors such as temperature, rainfall, soil. etc.
4. Thus, most of the natural regions are homogeneous ecosystem.
