an ice cube is placed inside a thermos and the lid is closed. The ice cube eventually melts. Most of the thermal energy that melts the ice comes from which source?

Ifound this on google “increases in temperature increase molecular activity, and can result in a higher rate of collisions between enzymes and substrates. if the temperature rises too high, however, the enzymes could become denatured, and the positive effects of the temperature increase could be nullified.” for more information go to the website below › i hope this you for what your looking for. can you plz mark me brainliest?

Cbecause it is the only one describing a habitat