The most abundant metal in the earth's crust and toxic to plants in low concentration is____________________?
Correct answer: B. Al
- A. Mo
- B. Al
- C. Fe
- D. All the above
Explanation
Aluminium is the most abundant metal in the Earth's crust and can become toxic to plants in strongly acidic soils. Iron is also abundant, while molybdenum is required only in very small quantities.
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