Question: what are the five natural regions?
Answer: Equatorial Region. Natural Environment: ... 
Tropical Grassland (Savanna) Region: ... 
Tropical Deciduous Forest Region: ... 
Tropical Deserts: ... 
Mediterranean Region: ... 
East Margin Region (China Type): ... 
Mid-Latitude Deserts (Steppe Lands): ... 
Eastern Margins or St Lawrence type: