Proof The Bible Is True

Researchers in Trinidad relocated guppies (Poecilia reticulata) from a waterfall pool teeming with predators to previously guppy-free pools above the falls where there was only one known possible predator (of small guppies only, therefore large guppies would be safe).1 The descendants of the transplanted guppies adjusted to their new circumstances by growing bigger, maturing later, and having fewer and bigger offspring.

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via Speedy species surprise.