Micro-Evolution: Only Evolution that is Possible
The only evolution in nature that is possible and can be called science is micro-evolution, which is variations within biological kinds such as varieties of dogs, cats, horses and cows.
Macro-evolution, or variations across biological kinds, is not possible. Why is this so?
The genes exist in all species for micro-evolution but not for macro-evolution, and there is no scientific evidence that random genetic mutations caused by natural forces such as radiation can or will generate entirely new genes for entirely new traits. Random forces in nature have no ability to perform genetic engineering in order to bring about entirely new genes.
Random genetic mutations caused by environmental forces will not produce entirely new genes anymore than randomly changing the sequences of letters in a cookbook will change it into a book on astronomy.
Evolutionists have nothing else to rely on except random genetic mutations caused by random forces of the environment, such as radiation, to make their theory work.