The same cup of water now has been sitting out and has cooled down 15oC to 35oC. How much heat did the water release into the room?

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.

energy and particles

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.