geeze I leave the forums alone for ONE DAY and look what I miss. :bonk:
anyway, about amino acids forming naturally... they have been found in deep space, so the likelyhood of thier being on anchient Earth is pretty good. Apparently they are quite common, and thus life in the univerce may be more common than most people think.
http://physicsweb.org/articles/news/7/8/7
Moving on, as for the biology of humanity. Being naked skined is a great advantage for us, we are after all air cooled by evaporation and having fur would only interfear with that process. Thus in the summer we shed our cloths in favor of being as naked as possible.
As for bipedalism makeing us better, how many quadrapeds are capable of killing a biped? Answer: all the carnivors, and most of the herbavors.
Now on to deveolpment of shelter, our closest relations the apes all build nests for the night, not very unlike our primitive dwellings. We just impoved on an already available idea. Much like tools wich apes (and other animals) also use.
The oldest (at about 300,000 years), remains of Homo Sapien are found in Africa.
At the time Africa wasn't as dry as it is today. Evidence for this comes from rock carvings in the middle of the Sahara desert that show trees, elephants, giraffes and other animals.
http://www.factmonster.com/ce6/ent/A0842147.html
http://www.projectexploration.org/nytimes/
As for dinosaurs Mr. Spinkles you are part right, the asteroid it appear was just the final nail in the coffin for many families of animals. The world was changing drastically at this time, and many factors contributed to the great extinction. The shallow seas that covered most of the world were retreating and becoming the deeper oceans that we have today. This helped to doom the Mososaurs, Plesiosaurs, Plyosaurs, Ictheosaurs, Marine Crocs and hosts of corals, ammonites, belomites and fish. This may have also contributed to the loss of the Pterosaurs as they were primarily fish eaters. Also lost were several types of early birds such as the toothed Enantiornithes, Confuciusornithidae, and others. The land was upheaving due to increased volcanic activity that formed for instance the Rocky Mountians. On land the last of the Labarithondont amphibians, rauisuchians, the Muliburculate mammals all died out. For plant life, many types of Cycads, Ferns and Conifers died out, thought I'll admit that Paleobotony is not my strong suit. If you want more info on plant extinctions due to the K-T event let me know and I'll look into it more.
Whatever caused the K-T extinction DID NOT just kill the Dinosaurs.
anyway, I hope this is a good start for answering your quetions, if you need me to elaborate any more on this just let me know and I'll do what I can to help you.
wa:do
