Physics
Planets are

luminous heavenly bodies that do not twinkle
non-luminous heavenly bodies
luminous heavenly bodies that twinkle
luminous heavenly bodies revolving around a star

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP