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.  

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


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

Biology & Microbiology

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