Which situation would result in a theory being replaced rather than revised?

Did you know that a single bee would have to go to over 2 million flowers to make a single pound of honey?

Recombinant dna (rdna) creates offspring which are genetically identical to the parent is the process of breeding only organisms with desirable traits involves the removal of the nucleus of a cell combines genes from organisms of different species in a lab

What factors contribute to the effect an environmental toxin has on the human body?