Which six elements are the main components in living organisms?
A) carbon,hydrogen,nitrogen,oxygen,phosphorus,sulfur
B) copper,iron,magnesium,sodium,water,zinc
C) carbon dioxide,hydrogen,nitrogen,oxygen,phosphate,sulfate
D) calcium,hydrogen,iron,potassium,sulfur,water
E) aluminum,magnesium,nitrogen,silicon,sodium,sulfur
Correct Answer:
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