How to find the upper tolerance and lower tolerance of a resistor?

Ineed to find the answer of this question because i dont understand it

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.