I take it that the evolutionary model is a tree, whereby all languages come from original grunts and animal noises. Many of you may think the creation model is a lawn, with all languages starting straight off at Babel, but actually it's more of an orchard. Several language groups were created by God at Babel. Over time, as groups spread out, different dialects became entirely different tongues. I was looking at a book on old Anglo-Saxon the other day and I found that a certain form (past participle?) of "to become" was identical to its equivalent in modern German. In fact I've heard English referred to as "Low German".
This just goes to show that the farther back in time you go, the closer languages get together. However, there are no (historical) links between different language groups.
In Maori (language of first New Zealanders) the word for fish is "ika", somewhat similar to the Greek "ichthyos". There is a theory that Maori originally came from the Egyptian region, which would explain any influences of that area. "Ra" is the Maori word for sun.
crashfrog, I posted an answer to the population question on another forum a while back. As soon as I have the energy to go find it I'll copy my mathematics on a new thread in, say, the "Bible Accuracy and Inerrancy" forum.