We can confirm that one variation in the worms is the adaptation to become nocturnal eaters instead of the more dangerous diurnal eaters.
Nocturnal worms are favored over diurnal eating worms given that the main predator of worms, birds, hunt during the day. This puts the diurnal worms are a much higher risk of being consumed. Through natural selection, this will likely result in most worms being entirely nocturnal within the next 50 or so years, which can in turn lead to the evolution of more nocturnal hunting bird species.
Therefore, we can confirm that one variation in the worms is the adaptation to become nocturnal eaters instead of the more dangerous diurnal eaters, which will likely be the most common variation over time, due to natural selection.
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