Every animal and living thing on this earth evolved. You evolved from a common ancestor that the chimp, gorilla, orangutan, and us share.
As for the argument of N15, I am not a scientist but I found this and I think it disproves your theory. Nitrogen isotopes indicate the trophic level position of various marine organisms (reflective of the time the tissue samples were taken). There is a larger enrichment component with δ15N because its retention is higher than that of 14N. This can be seen by analyzing the waste of organisms. Cattle urine has shown that there is a depletion of 15N relative to the diet. As organisms eat each other, the 15N isotopes are transferred to the predators. Thus, organisms higher in the trophic pyramid have accumulated higher levels of 15N ( and higher δ15N values) relative to their prey and others before them in the food web. Numerous studies on marine ecosystems have shown that on average there is a 3.2‰ enrichment of 15N vs. diet between different trophic level species in ecosystems. In the Baltic sea, Hansson et al. (1997) found that when analyzing a variety of creatures (such as particulate organic matter (phytoplankton), zooplankton, mysids, sprat, smelt and herring,) there was an apparent fractionation of 2.4‰ between consumers and their apparent prey.
In addition to trophic positioning of organisms, δ15N values have become commonly used in distinguishing between land derived and natural sources of nutrients. As water travels from septic tanks to aquifers, the nitrogen rich water is delivered into coastal areas. Waste-water nitrate has higher concentrations of 15N than the nitrate that is found in natural soils in near shore zones. For bacteria, it is more convenient for them to uptake 14N as opposed to 15N because it is a lighter element and easier to metabolize. Thus, due to bacteria's preference when performing biogeochemical processes such as denitrification and volatilization of ammonia, 14N is removed from the water at a faster rate than 15N, resulting in more 15N entering the aquifer. 15N is roughly 10-20‰ as opposed to the natural 15N values of 2-8‰. The inorganic nitrogen that is emitted from septic tanks and other human-derived sewage is usually in the form of NH4+. Once the nitrogen enters the estuaries via groundwater, it is thought that because there is more 15N entering, that there will also be more 15N in the inorganic nitrogen pool delivered and that it is picked up more by producers taking up N. Even though 14N is easier to take up, because there is much more 15N, there will still be higher amounts assimilated than normal. These levels of δ15N can be examined in creatures that live in the area and are non migratory (such as macrophytes, clams and even some fish). This method of identifying high levels of nitrogen input is becoming a more and more popular method in attempting to monitor nutrient input into estuaries and coastal ecosystems. Environmental managers have become more and more concerned about measuring anthropogenic nutrient inputs into estuaries because excess in nutrients can lead to eutrophication and hypoxic events, eliminating organisms from an area entirely.
Now that your argument is explained thoroughly to be totally compatible for the theory of evolution, why don't I challenge you to explain some things. If animals didn't evolve why does the Laryngeal nerve go from the brain all the way back down to the chest looping around one of the main arteries of the chest, before it goes all the way back up to the larynx? This is explained here. Also, the Modern DNA lineage mapping and tracking wins hands down. It shows past relationships and acts as a sort of timeline clock. We can see old bits of ancient viral particles, now unused, in our genes as well as the same stuff in chimp and ape and lemur DNA. It shows identical aging artifacts and identical attributes. Also, some of our unused DNA is just "temporarily out of service" because it's no longer needed. But it can and has been reactivated in the lab and then provides functions identical to that which WAS functional in older species.
Finally, it shows when breaks were made in the lineage, and then we go look for predictable evidence of that in the fossil record, coupled with independantly verified radioisotopic dating, and guess what? It all coincides. <<< removed link. >>>
If you still need more help revealing to yourself that evolution is a fact, read Why Evolution is True by Jerry Coyne.
