Prove that absolutely harmful plants do not exist in nature.

The concept of “harmful” plants (or animals) is an outdated stereotype of thinking. All plants, mushrooms, animals are the same creatures as people, and they are all needed for something. You destroy one species, and this can lead to a global catastrophe. There are plants that are poisonous to humans: oleander, for example (all parts of the plant are poisonous, although it is often grown as an ornamental houseplant), the same can be said about castor bean – and it is grown in flower beds (in our Siberia it is called “Siberian palm” ), henbane, dope and many others.