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This is a thread for posting examples of evolution to refer to when in debate.

To get the ball rolling, here is an example of where the theory of evolution explains how living things have their current forms.

There have been found caves in which organisms survive despite being completely cut off from the surface. There are spiders and centipedes that have no vision, and have no pigmentation. God could have created these organisms, but it is easy to see how organisms that had been trapped in there could have mutated. Pigmentation provides no advantage in a dark environment; albino animals would need fewer nutrients, and so would find life easier than pigmented animals. Thus; they would find it easier to successfully breed.

The reason why we acknowledge that this is most likely what has happened is that we quite simply don't observe deities creating new organisms using magic. One can test the theory of evolution by creating a dark ecosystem, introducing surface dwelling animals and observing as the population seems to become more adapted to dwelling in the dark. Albinos are rare, but it's only a matter of time before they are seen.

One good example is to cite all the species that have become extinct, if they were truly part of gods great plan why were they allowed to die out?
A creationist might say its the fault of man, and in most of the cases they'd be right but there are still quite a few species that have died out "naturally"

Lol, its not a competition you know...

There is evidence that certain species of birds evolved from the velociraptor, which we have gathered from studying their fossils. Ironically, these same fossils are the ones that creationists seem to make a fuss about. I wonder why....

Another example is the long extinct Cladoselache shark, which had a lot of the same characteristics as the tiny spined pygmy shark. It is believed that this is a result of it's predatory ancestor.

So... uh, what are you trying to say?
That evolution is the way that evolution occured?

Anyway, I've got an example, today.
"Super rats" which are immune to poisons are thriving, as chemical poisons are being used on rat population. This is, of course, exactly the same process as bacteria which become immune to anti-bacterial medicine, 'cept it happens a little slower, 'cause rats breed a little slower than bacteria.
People may say that this is different, because it is not in nature; but then again, what is selecting the succeeding generations of the rats? Survival; more specifically, survival against an environmental pressure (rat poison in their habitat).
KYRGYZSTAN rats
SCOTLAND rats
BRITISH rats
TOKYO rats