I see, going back and reading the full exchange it becomes clear that you were talking about nature in general.
However, I do think you're quite disingenuous to accuse
@SG854 of denying homosexuality or transsexuality after he clearly stated he believes they're "very real"
Personally I wouldn't go as far as to say that democrats deny biology but there's certain things in life where biological sex has to be the differentiating factor, like athletics, for obvious reasons. Democrats are trying to make the differentiating factor be gender identity as an anti discrimination measure. I can see how this could be seen as "denying biology". Obviously I'm aware of cases like Caster Semenya it's extremely difficult to be fair to everyone here but the point is that female athletics is a protected category precisely because there's biological differences.