Trace elements are those required by an organism in only minute quantities. Which of the following is a trace element that is required by humans and other vertebrates, but not by other organisms such as bacteria or plants?

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#Question id: 24112

#Aptitude

You cannot become a certified teacher without completing the prerequisite student-teaching assignment.

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#Question id: 24113

#Aptitude

Charles, aware of his susceptibility to gum disease, is diligent about flossing.

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#Question id: 24114

#Aptitude

Even though she’d read her supervisor’s memo four or five times, she still found his rambling message ambiguous.

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#Question id: 24115

#Aptitude

Excited about winning the award, Marcia walked up to the podium and delivered an animated acceptance speech.

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#Question id: 24116

#Aptitude

The intermittent rain soaked the garden many different times during the day.

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#Question id: 24117

#Aptitude

I got a vicarious thrill watching you on the diving board.