Passage: 'Phytoremediation employs specialized hyperaccumulating plants to extract and stabilize heavy metal contaminants from degraded industrial soils.' What is the primary mechanism of phytoremediation?
Answer and explanation
Correct answer: D. Using biological plant uptake to absorb toxic soil contaminants
- Step 1: 'employs specialized hyperaccumulating plants to extract and stabilize heavy metal contaminants'. Step 2. The mechanism is biological extraction via plant uptake. Answer: Using biological plant uptake to absorb toxic soil contaminants. Why not the others: Chemical injection, incineration, and plastic capping do not use plants.
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