Evolution has impossibilities and contradicitions.

Thank you for the debate, Dave34. Contention 1: "And evolution cannot explain the diversities of life in the Cambrian..." There are some plausible explanations for why diversification may have been relatively sudden:ï¿½ The evolution of active predators in the late Precambrian likely spurred the coevolution of hard parts on other animals. These hard parts fossilize much more easily than the previous soft-bodied animals, leading to many more fossils but not necessarily more animals.ï¿½ Early complex animals may have been nearly microscopic. Apparent fossil animals smaller than 0.2 mm have been found in the Doushantuo Formation, China, forty to fifty-five million years before the Cambrian. Much of the early evolution could have simply been too small to see.ï¿½ The earth was just coming out of a global ice age at the beginning of the Cambrian. A "snowball earth" before the Cambrian explosion may have hindered development of complexity or kept populations down so that fossils would be too rare to expect to find today. The more favorable environment after the snowball earth would have opened new niches for life to evolve into.ï¿½ "For evolution to be true, like it says, life must start out simple, but we do not find simple life forms in the oldest layer of the Earth. And if you think bacteria developed into these creatures of a period of 5 million years, youre going beyond the realms of science." Oldest layer of Earth? The Cambrian explosion was the seemingly sudden appearance of a variety of complex animals about 540 million years ago (Mya), but it was not the origin of complex life. Evidence of multicellular life from about 590 and 560 Mya appears in the Doushantuo Formation in China (Chen et al. 2000, 2004), and diverse fossil forms occurred before 555 Mya (Martin et al. 2000). (The Cambrian began 543 Mya., and the Cambrian explosion is considered by many to start with the first trilobites, about 530 Mya.) Testate amoebae are known from about 750 Mya (Porter and Knoll 2000). There are tracelike fossils more than 1,200 Mya in the Stirling Range Formation of Australia (Rasmussen et al. 2002). Eukaryotes (which have relatively complex cells) may have arisen 2,700 Mya, according to fossil chemical evidence (Brocks et al. 1999). Stromatolites show evidence of microbial life 3,430 Mya (Allwood et al. 2006). Fossil microorganisms may have been found from 3,465 Mya (Schopf 1993). There is isotopic evidence of sulfur-reducing bacteria from 3,470 Mya (Shen et al. 2001) and possible evidence of microbial etching of volcanic glass from 3,480 Mya (Furnes et al. 2004).ï¿½ Contention 2: Peppered Moths My opponent is seriously contesting the scientific fact that is natural selection. I'll let the evidence speak for itself. "Around the middle of the 19th century, however, a new form of the moth began to appear. The first report of a dark-colored peppered moth was made in 1848. By 1895, the frequency in Manchester had reached a reported level of 98% of the moths.(1)" You cannot expect this sudden increase in dark-colored peppered moth to be incidental. Since my opponent seems to not have bothered with the source, here's more: "In recent years, the burning of cleaner fuels and the advent of Clean Air laws has changed the countryside even in industrial areas, and the sootiness that prevailed during the 19th century is all but gone from urban England. Coincidentally, the prevalance of the carbonaria form has declined dramatically. In fact, some biologists suggest that the dark forms will be all but extinct within a few decades." "For evolutionary biologists, the question behind the rise and fall of the carbonaria form is "Why?" Why should the dark phenotype have appeared so suddenly, come to dominate the population in industrial areas, and then have declined just as sharply when levels of pollution declined? To many biologists, the answer seemed obvious. In areas where pollution had darkened the landscape, the darker moths were better camouflaged and less like to be eaten by birds. Under less-polluted conditions, the light-colored moths prevailed for similar reasons." And just in case, I've supplied more examples of natural selection.(2) Contention 3: "My example of bird evolution was to show that evolution, if true, should have some transitional fossils that show it is occuring. Bird evolution is a great example since they are so well preserved in the fossil record, we have many to study and if birds evolved from reptiles, like evolution says, we should see an animal with feathers and perhaps scales." Scientists studying the evolution of turtles faced a very similar problem, but that didn't mean turtles spontaneously evolved a fully complete shell any more than did the birds with wings. Two years ago, however, the first transitional fossils were discovered in China (Odontochelys semitestacea). Just goes to show that gaps in the fossil records can not be considered proof of evolutionary gaps. I have refuted or gave reasonable explanations to my opponent's claims.ï¿½ Vote Con!ï¿½ Sources 1.http://www.millerandlevine.com... 2.http://www.cracked.com...