Answer:A theory is and idea or belif that we belive to be true but there is still a chance it may be wrong
Explanation: Darwins ideas are called theories becasue though they are belived to be true as ttheir is science to back them up they are called theories because thereis a chance they might be false and they disagreed with religion i would compare Darwin the Einstien his theory of relaitivity is belived to be true but again we are not 100% sure hope this helps god bless
