Explain how thermoregulation operates under a negative feedback mechanism.

A negative feedback system is one that when it moves away from its desired state, acts to push itself back toward that state. Thus negative feedback is a method for maintaining stability. Thermoregulation is what the body does to maintain homeostatis, an (approximately) constant body temperature.

Hold on to his or her beliefs even if there is no evidence for those beliefs.

Aneutral atom must have the same number of neutrons and protons? no, they must have the same number of protons and electrons