1) It's just a theory. That statement often gives the impression of uncertainty. But a scientific theory does not represent uncertainty. Cite evidence that supports the fact that a scientific theory does not represent uncertainty.

well, since there is no answer choices, i will give an answer on how it works : )

the two objects are placed together. energy will always be transferred from the hotter object to the cooler object until they are equal. hope this is close to one of the answer choices : )