We "know" that the Earth is billions of years old?
Yep.
That's news to me!
Been pulling a Rip van Winkle, eh? You have a lot of catching up to do.
Single celled organisms can reproduce, yes. But, they can't become multi-celled organisms.
Right. Organisms (individuals) don't evolve. Species do. Unicellular species can become multicellular. Molal referred you to this paper:
Becoming Multicellular by Aggregation; The Morphogenesis of the Social Amoebae Dicyostelium discoideum
Maybe you haven't had time to read it yet, but it is a study of how one unicellular species becomes multicellular under certain conditions.
If they could, then evolution with single celled organism's would still be apparent.
It is.
Do you know HOW single celled organisms reproduce? They split, or basically clone themselves.
Correct.
So, with that said, how do you figure single celled organisms are able to evolve into multi-celled organisms?
Do you know that behaviour can be genetically programmed? If cells that cooperate with each other, sharing tasks and specializing their functions are more successful at surviving and reproducing than cells that practice rugged individualism, that co-operative behaviour will be inherited. Over time, it will result in a multicellular organism.
Do you see the flaw now?
No, do you still see one?
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