Heat transfer in liquids or gases that happens due to currents of hot and cold is called Entropy
Conduction
Convection
Radiation

convection it's your answer plz make me brainy least

Entropy is the correct answer

I think this is the correct answer

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

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