Physics
Which elements are malleable and good conductors of electricity?

Iodine and xenon
Tin and xenon
Tin and silver
Iodine and silver

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Physics
Why does bleeding occur through the nose in high mountainous regions ?

The blood pressure of a person increases at high altitudes
The blood pressure fluctuates and finally decreases drastically
The pressure at high altitudes is greater than that on the plains
The pressure of blood in capillaries is greater than the outside pressure

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