Rat-eating plant declared a new species

[ThomWV]

7. If I had to guess I'd say that the bones are what it needs the most

If I had to guess I'd say that the trigger that moved the evolution of that plant toward the state it is in now is a lack of calcium in the soil where it grows. In places where it rains a lot the soils tend to be very acidic and that makes it more difficult for plants to take up the nutrients and minerals it needs from the soil. At any rate the plant finding and taking in nutrients from animals for one of two reasons; first it may be that it takes less energy to get the nutrients it needs that way, or second that the only way the nutrients it needs can be had is through digesting animals.