Physics
Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in

Conduction
Convection
Radiation
Both conduction and convection

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Physics
We always see the same face of the moon, because

It is smaller than the earth
It revolves on its axis in adirection opposite to that ofthe earth
It takes equal time for revolution around the earth and rotation on its own axis
It rotates at the same speed as the earth around the sun

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