What plants are predators? Why did they become predators?

1) Dewdrop round-leaved (in the swamps), common puffin, Venus flytrap, pemphigus vulgaris (lives in water).
2) Plants – predators usually live on mineral-poor soils.
3) In the course of evolution, they switched to predation, have devices for attracting and capturing insects, which are the main source of nutrients such as nitrogen and phosphorus.

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