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Two geographical regions separated by high mountains are

1. Oriental and Australian
2. Palaearctic and Oriental
3. Nearctic and Palaearctic
4. Neotropical and Ethiopian

Correct answer: Palaearctic and Oriental

Solution

The Palaearctic and Oriental realms are separated by the Himalayan mountain system and associated high ranges, which act as a strong geographic barrier. This limits the movement of species between temperate northern Asia and tropical South Asia.

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