Which of the following essential element(s) is/are required as major supplement to enhance the bioremediation of oil spills by the resident bacteria?

Which of the following essential element(s) is/are required as major s

1.	Which of the following essential element(s) is/are required as major supplement to enhance the bioremediation of oil spills by the resident bacteria?
A.	Sulfur
B.	Nitrogen and phosphorus
C.	Iron
D.	Carbon
Answer» C. Iron

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Which of the following essential element(s) is/are required as major supplement to enhance the bioremediation of oil spills by the resident bacteria?

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