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how do conduction and convection differ?
a. conduction can move through empty space to transfer heat; convection cannot.
b. conduction does not require objects to have direct physical contact; convection does.
c. conduction requires objects to have direct physical contact; convection does not.
d. conduction transmits heat through electromagnetic waves; convection does not.

C. Conduction requires objects to have direct physical contact; convection does not.

Explanation:
Conduction is used in cooking. You have to put the pot on the burner to cook the food. Otherwise, the air will cool it and the food will not cook because it's not getting the pot hot.
Convection moves heat through electromagnetic waves, kinda like the sun warming the Earth.

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C. conduction requires objects to have direct physical...

Atomicity occurs to prevent updates of the database occurring only partially, which can cause greater problems than rejecting the whole series outright.some are monatomic, diatomic, triatomic etc because it shows the number of atoms. for example, monatomic means it contains only one atom.

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