Multiple Choice
The concentration of a trace essential element in the body is typically in the range of ________ per gram of body mass.
A) 1g to 1 mg
B) 1g to 10 mg
C) 10g to 10 mg
D) 10g to 100 mg
E) 100g to 100 mg
Correct Answer:

Verified
Correct Answer:
Verified
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