Bonjour, je ne connais pas beaucoup le français, je suis donc traductrice. De mon point de vue, je suggère d'utiliser les informations dont vous disposez et de les utiliser sur le graphique. J'espère que cela a aidé.
The term that can be used to describe evolution by natural selection is SCIENTIFIC THEORY.
Theory means "the best explanation so far."
Scientific theory is a work in progress. It is a well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method, and repeatedly confirmed through observation and experimentation.