Which of the Following Is a Natural Process of Plants

Which of the following is a natural process of plants that can be used by humans to remove toxins from soils? Check all that apply.

A) secretion of a substance from the roots that breaks down the toxic chemical
B) "storage" of a toxic chemical in plant tissues,which are then removed from the site
C) root pressure pushing toxins from deep in the soil towards the surface
D) physiological breakdown of the chemical into harmless products
E) transport of toxins absorbed by the roots into the shoots,where they can be collected more easily