Nose bleeding is a common phenomenon at high altitudes. Which of the following reason correctly describes this fact?

Atmospheric pressure is high at altitudes

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Atmospheric pressure is low at altitudes

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Both A and B

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It does not depends upon the atmospheric pressure

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Solution

The correct option is B
Atmospheric pressure is low at altitudes

Nose bleeding is a common phenomenon at high altitudes. The atmospheric pressure is low at high altitudes. But the pressure inside the human body does not change. Thus, the high pressure inside the body and the low atmospheric pressure causes bursting of arteries which are close to the inner skin of the nose.

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Question 06
Low concentration of oxygen in the blood and tissues of people living at high altitude is due to..............
(a) low temperature
(b) low atmospheric pressure
(c) high atmospheric pressure
(d) Both low temperature and high atmospheric pressure

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