The three regions are the Troposphere, Stratosphere, and Mesosphere.
formalfunctionalvernaculor
Quebec
central America the carribean and south America
there are 22 regions in mainland France, and 4 overseas: France's mainland 22 regions are: Alsace - Aquitaine - Auvergne - Bourgogne - Bretagne - Centre - Champagne-Ardenne - Corse - Franche-Comté -...
Himalayan Region, Mountain Region and Terai Region.