Describe trace elements
A) Trace elements are abundant in the atmosphere and also abundant in the human body.
B) Trace elements are present in small amounts in the body and are required for normal growth and maintenance.
C) Trace elements are present in small amounts in the body and are not necessary for normal growth and maintenance.
D) Trace elements are present in small amounts in the atmosphere but accumulate in the body at high levels.
E) Trace elements are the elements produced by nuclear reactions in research laboratories.
Answer: B
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