Which of the following is a trace element?
Correct answer: B. Copper
- A. Hydrogen
- B. Copper
- C. Oxygen
- D. Carbon
Explanation
Copper is a chemical element with the symbol Cu and atomic number 29. It is a transition metal with a reddish-brown color, and it is known for its excellent conductivity of electricity and heat. Copper serves as a cofactor for several enzymes involved in essential biological processes.
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