Originally posted by '93accordse
I personally cant wrap my head around how a fish would even start to process oxygen without a fully functional respitory system, and thats not really the evolution i beleive in. I beleive that when something's environment changes, those who have a genetic mutation in favor of the change will survive and reproduce, where those who dont have the mutation will not survive. whether it is the color of somethings skin that blends in with its environment and helps protect against preditors, or any other genetic change that works in favor of survival.
Now this may sound a bit outlandish, but the only way i could see a fish developing lungs, would be for it to cross breed with something that actually has a functional respitory system. The offspring would then possibly have some characteristics of a fish, with the added respitory system of whatever it mated with, and that just so happen to actually help this offspring survive in say both water and on land.
after writing all this out, i guess i dont believe in the standard theory of evolution. but i certainly believe in survival of the fittest
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