HELP ASAP please

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

What term describes technology that operates on an atomic level

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.