The correct answer is (B) They are both Northern Hemisphere, warm-temperate forests. Although Appalachian (U.S.A.) and Southwestern Caucasus (Russia) have common origins, both northern hemisphere warm-temperature Tertiary forests, they have developed differently. The similarities also include the species-to-genus, species-to-families ratios and the floristic composition.
India - Deccan Plateau
Pakistan - Khyber Pass
Sri Lanka - Mount Pidurutalagala
Nepal - Mount Everest
Regions that depend on commercial agriculture