You asked the question "How?". The answer to that question is
genetic mutations and natural selection. If this answer is correct, then common ancestry will be evidence that the answer of genetic mutations and natural selection is accurate. "All living things on earth are related" is very much part of the conversation.
That's your claim, with absolutely no evidence, based on the scientific method, to support it. You're making baseless, empty claims, simply posting words with no support.
This is not addressing comparative anatomy in the least bit.
Answer me this question: Are you asking how genetic mutations and natural selection exist? It's a natural process. One that you have agreed exists.
You simply posted the words "comparative anatomy" with absolutely no evidence, based on the scientific method, for the process which produced pine trees and humans from an alleged single life form (unknown) of long ago. Baseless claims, empty words, isn't evidence based on the scientific method.
If you're asking how genetic mutations and natural selection gave rise to the diversity of all life on earth, the evidence has been presented to you and you should start addressing it.
I'm asking what I've been asking for probably hundreds of times now. Give the evidence, based on the scientific method, for the HOW, the process which produced pine trees and humans from an alleged single life form (unknown) of long ago. So far, you've given nothing but personal opinion with not a hint of the evidence.
You claimed to have the evidence contained in the links you posted earlier in this thread. I've asked you repeatedly to just pick one of the links and offer a reference, some content, within the link for the evidence. So far, you've offered not one reference, not a bit of content from the links. Did you read the links before you posted them? If you did, and you claim there's evidence contained in the link, post it. Reference it. Just one link, your choice.
There are several links and quotations pulled form those links in post #511 in the closed thread.
There's not a single reference to evidence for the how/process of pine trees and humans being produced from an alleged single life form (unknown) of long ago. You can't reference your own claims. You aren't able to post content you claim is there. That's because it's not there.
Now that we have established that genetic mutations and natural selection are a natural process,
You haven't established evidence for the process, based on the scientific method. Go back to your links you claim contain the evidence. You offered the links, made certain claims. Now prove it. Reference the evidence. Reference the content. Show something from the links which is evidence based on the scientific method.
You're not doing that after asking you repeatedly to support your claims. There's been nothing from those links referenced by you. The reason is that there's nothing there to offer. You're simply making wild and baseless claims.
one you have agreed exists, we can now move on to the evidence that has been presented. If you'd like to start over with comparative anatomy, feel free to do so or you can move on to point B.
You've presented no evidence in point A. If you have, please copy and paste it and we'll subject it to the scientific method to see if it passes or fails. Simply posting a term or terms isn't offering evidence, that's only offering your personal opinioin, your personal guesses and suppositions.
And again, face your claims concerning the links you gave in this thread. Support the claims with actual references, actual content referencing the experiments which resulted in the evidence for how/the process whereby pine trees and humans were produced from an alleged single life form (unknown) of long ago.
You posted the links and made the claims. Actually address your claims.