Physics
What is the force of attraction between any two bodies by virtue of their masses is called?

Electromagnetic Force
Centripetal Force
Nuclear Force
Gravitational Force

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Physics
Air moves from the region where the air ________

Humidity is high to the region where the humidity is low
Humidity is low to the region where the humidity is high
Pressure is high to the region where the pressure is low
Pressure is low to the region where the pressure is high

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Physics
Why does the sea appear blue in colour?

Interference of the sun light from water surface
Reflection of the sun light from water surface
Scattering of the sunlight by water molecules
Refraction of the sun light

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