Entry 1:
When people say mutants, the first things that pop in to mind are, deform, or X-men.
I'm not hear to talk about comic books to clarify.
Now, when a life form is mutant, it is different, it is alien even, but mutations aren't exactly caused by toxic stuff. It's more of an adaptation. When DNA randomly changes its labeled as a mutation, but when something physically adapts. It's DNA changes. So when something is mutant, 65% of the time it's going to be adapted. If we look at mutations of different life forms we can possibly recognize an ecosystems changes.