“Much in biology is rather hard to prove.”
MOST science is difficult to explain to a layman. Even what happens when you hit ‘start’ on a microwave. Doesn’t make it any less sciencey.
“Evolution is a theory regarding something long gone”
The theory about all life on the entire planet and how it got to be that way? That theory? The one connecting the elephant and the hyrax, but separating the duck and the duckbill platypus? Long gone, huh?
You think it only concerns fossilized dinosaurs and hominids?
“and is biology at its worst.”
You’ve demonstrated that you don’t know enough to judge it.
"Unlike other pure sciences,”
I’m guessing that, here, you mean the stuff that can be engineered into telephones and TikTok and vape machines.
Same science, sweetie.
“there is no concrete evidence to go on.”
Yeah, that’s why every textbook on evolution includes the ‘and how we know this to be true’ explanations.
"Gravity is provable to anyone just because it is part of one's daily life. There is no question it is happening.”
That’s not true. There is a down, yes. that’s a demonstrable fact. There’s also the theory about HOW we get ‘down’ from mass. Gravity is a fact and a theory.
"Meanwhile, biologists tell us all that chromosomes cannot be added or deleted from a species;”
No, the do not..
“thus negating the idea that species can change into another.”
No, it does not.
“Yet they seem to think that somehow chromosome sets grew or shrank in size to form new species from other older ones.”
Citations needed all the way through this.