Question

if we see in the cold regions many people have pointed nose where as we compared to hot reasons they have broad nose why ? give two reasons​

Answer 1

Answer:

Differences in the human nose may have accumulated among populations through time as a result of a random process called genetic drift. However, divergent selection — variation in natural selection across populations — may also be the reason that different populations have differing noses

Answer 2

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Many scientists believe the quality of the air in a region is related to how noses developed over time. For example, in tropical climates, air is hot, humid, and more rarified. Therefore, nostrils are open and wider to let more air flow in. Conversely, in colder climates, air is usually drier.

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