Discussion of everything related to the Theory of Evolution.
Well, I was talking about animals, not people, but IMHO both
applies. You see, that is a good example. Why did our ancestors
have to get out of the water? Do you think, there is not enough
food? Just look, how many creatures there is nowadays. So why?
Just because that was new, no concurence, piece in soul Cis or
trans? That's what matters. There was a driving force behind the
evolution of the transitional species between fish and
amphibians. The earth was warming up at this time, meaning
oxygen content was decreasing (oxygen saturation being a
function of temperature). Some fish evolved methods of breathing
air but still being very reliant on an aquatic lifestyle. There
are still many extant examples of this including Anabantoids
(siamese fighting fish, gouramis, etc), mudskippers and walking
catfishes. This led to the evolution of the lungfishes which
could survive even longer out of water. Even a slight ability to
breathe air was a huge advantage