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Geography Optional 300+ Score Pack · Model answer

“Human adaptation with environment is spatially variable.” Elaborate.

  • Environmental Geography

Human beings are the only species that inhabits every bioclimatic zone of the earth — from the Arctic tundra to the hyper-arid Sahara, from the sea-level mangrove delta to the 4,500 m Tibetan Plateau. This extraordinary geographical reach has not been achieved through a single universal strategy. Rather, it is the outcome of spatially differentiated…

You are reading the opening of the model answer. The full answer is part of the Geography Optional 300+ Score Pack.

What the full answer covers

  • I. Biological adaptation: physiological and anatomical spatial expressions
  • A. Morphological patterns: Bergmann's and Allen's rules
  • II. Genetic adaptation: the molecular geography of human adjustment
  • A. High-altitude hypoxia: three geographically divergent genetic solutions
  • B. Diet-driven genetic adaptation: the lactase persistence gradient
  • C. Malaria resistance: the sickle cell geography
  • …and 3 more sections, with a conclusion

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