Where would energy transfer by conduction move downward, from a higher block to a lower block?

Question 1 options:

Sample 2 to Sample 4

Sample 3 to Sample 4

Sample 1 to Sample 2

Sample 1 to Sample 3

b. is the answer hoped i        

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.

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