2000</ref> It is then tested with [[experiments]], and if it makes [[falsifiable]] claims and is supported by evidence, is called a [[theory]]. Thus, [[Gravity]], [[Quantum Mechanics]], [[Germ Theory]], and [[Evolution]] are all referred to as '''theories'''. | 2000</ref> It is then tested with [[experiments]], and if it makes [[falsifiable]] claims and is supported by evidence, is called a [[theory]]. Thus, [[Gravity]], [[Quantum Mechanics]], [[Germ Theory]], and [[Evolution]] are all referred to as '''theories'''. |